Phillip Godzin’s pgodzinai forecasts 29%

This is the full report. Condensed version here.

Perplexity response:

[1] RAND Forecasting Initiative – “Will a bilateral ceasefire or peace agreement in the Russia‑Ukraine war take effect by 31 December 2026 and hold for at least 30 consecutive days?”

Date: Question closing 31 Dec 2026; criteria page last updated in 2024.
Relevance: Defines a bilateral ceasefire/peace agreement between Russia and Ukraine and the requirement that it cover all official and disputed territories and last 30 days to count.[1] It clarifies that partial or regional ceasefires (e.g., humanitarian corridors or domain‑limited pauses) do not qualify for that question, and that only formally negotiated, mutually agreed pauses in offensive combat operations count.[1] The page also notes ISW’s daily campaign assessments as a secondary reference for determining the status of hostilities.[1]

[4] Lines.com – “Will Russia and Ukraine Reach a Peace Deal by End of 2026?”

Date: Market live as of mid‑2026 (snippet reflects current prices).
Relevance: This prediction market asks whether Russia and Ukraine will formalize a peace arrangement by 31 December 2026, conceptually close to an armistice or peace deal.[4] As of the latest snapshot, YES trades around $0.16 and NO around $0.85, implying a low market‑implied probability of such a deal by end‑2026.[4] The large notional volume (over $500k) suggests a reasonably informed and liquid market view on the likelihood of a formal settlement.[4]

[2] Responsible Statecraft – “Trump is blowing his chance to make peace in Ukraine”

Date: Published after “eighteen months” of the new U.S. diplomatic track; context indicates 2026.[2]
Relevance: Argues that U.S.‑led talks under President Trump have stalled and coincided with escalation, rather than de‑escalation, of the war.[2] The article says “fundamental flaws in the negotiating process” have undermined efforts to reach a ceasefire and “created new obstacles to a near‑term armistice.”[2] It concludes that the current diplomatic process is “destined to fail” without major changes, and lays out a roadmap of what would be needed to revive credible negotiations.[2]

[5] Defense Priorities – “Trump is blowing his chance to make peace in Ukraine” (reprint)

Date: Same analysis as [2], republished by a U.S. foreign‑policy think tank.
Relevance: Reiterates that attempts to secure a ceasefire or armistice have so far been counterproductive and that peace talks have stalled while the war has escalated.[5] Emphasizes that the U.S. must shift from territorial questions to core political and security issues if it wants to unlock a settlement.[5] Also notes that any deal will almost certainly fall short of NATO‑style Article 5 guarantees for Ukraine, constraining what Kyiv can realistically expect on security assurances.[5]

[6] Al‑Monitor – “Europeans to test Trump on Iran deal risks, urge Ukraine rethink at G7”

Date: June 2026.
Relevance: Reports that European diplomats plan to use the June 2026 G7 summit to push President Trump to reconsider both his Iran policy and his approach to ending the Ukraine war.[6] They view the summit as a chance to convince Washington that past U.S. proposals for a Ukraine deal have been too risky and unrealistic, and to encourage a broader rethink.[6] The article shows that key European governments are actively seeking a shift in diplomatic strategy, but it does not report any imminent ceasefire or armistice framework.[6]

[3] American Legion – “Five Things to Know, June 15, 2026”

Date: 15 June 2026.
Relevance: Notes that Russian drone and missile attacks on Ukraine overnight killed at least 10 civilians and wounded dozens more, confirming that high‑intensity strikes continue as of mid‑June 2026.[3] The piece presents these attacks as part of ongoing daily news, with no mention of any ceasefire in force.[3] It thus serves as a near‑real‑time indicator that, at least up to mid‑June 2026, hostilities remain active and lethal.[3]

[7] SAGE (journal chapter) – “The Geopolitical Stakes of Ukraine’s NATO Membership”

Date: 2025.
Relevance: Discusses post‑war security arrangements and describes a scenario in which Western troops might be deployed to Ukraine only after an armistice between Moscow and Kyiv.[7] This implicitly treats an armistice as a distinct, long‑term pause in fighting that could stabilize lines and enable new security guarantees.[7] The chapter underscores that NATO membership and Western troop presence are being analyzed in policy circles as post‑armistice options, not as tools to force an armistice.[7]

[8] Economist (via Instagram post) – “As of June 11th, the fighting in Ukraine had ground on…”

Date: 11 June (year not explicit in snippet, likely 2024 or 2025).
Relevance: Notes that the fighting in Ukraine has “ground on” and tells readers that “when an armistice in Ukraine comes, it will differ in flavour from that signed in Versailles in 1919,” highlighting expectations of a Korea‑style or frozen conflict‑style armistice.[8] The post stresses that Western policymakers need to “gear up to help [Ukraine] win the peace,” framing armistice planning as a future, not imminent, issue.[8] It suggests that serious thought is being given to eventual armistice mechanics, even while active combat continues.[8]

[9] Economist (via Facebook post) – “When an armistice in Ukraine comes, it will differ in flavour…”

Date: Same article as [8]; social‑media teaser.
Relevance: Again emphasizes that an eventual armistice is expected but will differ from historical precedents like Versailles.[9] Hints at parallels and differences with past post‑war orders, underlining that any Ukraine armistice would likely freeze lines rather than fully settle political disputes.[9] By speaking in future conditional terms (“when an armistice … comes”), it treats armistice as likely eventually but not tied to any near‑term timeline.[9]

[1] RAND Forecasting Initiative – Resolution Criteria Emphasis

Date: As in item 1.
Relevance: Explicitly stipulates that limited or regional ceasefires do not qualify for that RAND question, and that only bilateral, formal, all‑territory pauses in offensive operations count as a “ceasefire/peace agreement.”[1] It also clarifies that battlefield violations do not automatically break a ceasefire unless one government formally withdraws from the agreement, highlighting how messy real‑world ceasefires can be in practice.[1] This is useful for interpreting how major media are likely to report any future ceasefire or armistice between Russia and Ukraine, which is directly relevant to your resolution source (“major news outlets”).[1]

Given your question—whether any bilateral ceasefire or armistice will be declared in 2026—the most relevant context is:

The war is still actively being fought as of mid‑June 2026, with ongoing Russian missile and drone strikes causing civilian casualties.[3]
Recent U.S.‑led diplomatic efforts are widely judged as failing to bring about a ceasefire or armistice and may have made a near‑term deal harder.[2][5]
European governments are trying to push for a change in approach at the G7, but there is no concrete ceasefire framework on the table.[6]
Prediction markets price the chance of a formal peace arrangement by end‑2026 as relatively low (around 16%).[4]

Below is a more structured rundown by theme.

1. Current state of the war (military situation up to mid‑June 2026)

As of 15 June 2026, Russian forces are still conducting large‑scale missile and drone attacks across Ukraine; one such overnight barrage killed at least 10 civilians and wounded dozens more, according to Ukrainian officials.[3]
These attacks are being reported as routine wartime news, with no suggestion of any existing ceasefire or operational pause between the two sides.[3]
The continued use of long‑range strikes implies that Russia still has both the capability and intent to hit Ukrainian cities and infrastructure, meaning the conflict remains in a high‑intensity, not frozen, phase.[3]

For your resolution: this very recent evidence strongly indicates that, up to mid‑June 2026, there has been no declared ceasefire or armistice, and hostilities remain active enough that a sudden, comprehensive pause would require a substantial change in political decisions on both sides.

2. Diplomatic track: what has been tried and why it’s stalled

2.1 U.S.‑led negotiations under Trump

A major U.S.‑led diplomatic process aiming to end the war has been ongoing for roughly 18 months, but according to one detailed critique, it has “stalled and the war has only escalated.”[2][5]
The analysis argues that Trump’s efforts have been “counterproductive, pushing peace further off rather than bringing it closer.”[2][5]
Key problems identified:
A flawed focus on territorial questions rather than the core security and political issues of both sides.[2][5]
Unrealistic promises to both Kyiv and Moscow, misaligning expectations and making compromise harder.[2][5]
Insufficiently inclusive negotiating formats that leave out relevant stakeholders, making any deal less sustainable.[2][5]
The author’s bottom line is stark: “the diplomatic process launched by the United States last year is destined to fail” unless these structural flaws are corrected.[2][5]

Implication for your question: as of mid‑2026, the main visible diplomatic track is widely judged as failing, and analysts see it as having created new obstacles to a near‑term armistice.[2][5] That is negative evidence for a ceasefire/armistice being declared in 2026 unless there is a substantial course correction.

2.2 European efforts at the G7 (June 2026)

European diplomats see the June 2026 G7 summit in France as a key chance to press Trump to rethink both his Iran and Ukraine strategies.[6]
On Ukraine specifically, they want to convince Washington that previous U.S. proposals for a deal to end the fighting have been too risky or unrealistic, and to “urge Ukraine rethink” at the summit.[6]
However, the reporting focuses on process and intentions, not on any concrete new ceasefire or armistice plan ready to be announced.[6]

Implication: Europe is pushing for a strategic reset in negotiations, but there is no sign yet of a specific ceasefire formula being close to agreement. That suggests limited progress toward a 2026 declaration so far, though the G7 is a genuine fork where things could shift if Washington and Kyiv change course.

3. How experts and markets view the chance of a 2026 settlement

3.1 Prediction markets

The Lines.com contract on whether Russia and Ukraine will “reach a peace deal by end of 2026” shows YES at about $0.16 and NO at about $0.85.[4]
These prices imply that traders collectively assign a low probability (roughly mid‑teens percent) to a formal peace arrangement by 31 December 2026.[4]
While your question is slightly broader (you count any declared ceasefire or armistice, even short and not necessarily 30 days, whereas Lines.com seems to focus on a peace deal), this is still a meaningful indicator of market pessimism about a formal settlement in this timeframe.[4]

3.2 Structured forecasting (RAND question)

The RAND Forecasting Initiative’s question asks whether a bilateral ceasefire or peace agreement will take effect by end‑2026 and hold at least 30 consecutive days, with strict criteria: it must cover all Russian and Ukrainian territory, be formally negotiated, and bar offensive operations.[1]
Limited regional or sectoral ceasefires explicitly do not count for that question; nor do unilateral declarations.[1]
This is stricter than your resolution (which would accept even a regional ceasefire), but the fact such a question had to be framed tightly highlights how low the perceived odds are for a robust, nationwide pause in hostilities of significant duration.[1]

You don’t have the current RAND crowd forecast in the snippet, but the Lines.com prices and the critical assessments of diplomatic efforts together point to expert and market expectations being skewed toward “no comprehensive deal by 2026.”[2][4][5][6]

4. Definitions: ceasefire vs armistice vs peace deal (and how media would report them)

Your own definitions line up well with how analysts and resolution sources tend to use these terms:

Ceasefire
Typically a temporary or localized halt in fighting, which may cover only a specific sector or type of operation (e.g., no artillery, humanitarian corridors).
Under your resolution, any officially declared bilateral ceasefire between Russia and Ukraine in 2026, even if limited in scope or duration, would count, provided it is reported by major international outlets.
Armistice
A more comprehensive, often indefinite pause in hostilities across the full front, without necessarily resolving the underlying war legally (Korean War analogy).[7][8][9]
The SAGE chapter and Economist commentary both treat an armistice as the precondition for post‑war arrangements like Western deployments or rebuilding the regional security order.[7][8][9]
Peace agreement / peace deal
Usually implies a broader political settlement, possibly including territorial arrangements, security guarantees, and mechanisms for dispute resolution.
The Lines.com market uses “peace deal” as the main outcome, which likely corresponds more closely to an armistice plus political terms than to a narrow, short‑term ceasefire.[4]

For your resolution, this means you could see a Yes outcome even in scenarios where:

The war is not fully settled, and
The ceasefire is short or geographically limited, as long as it is a formal, bilateral declaration covered by major media.

That is notably easier to satisfy than the RAND criteria or the Lines.com “peace deal” definition.[1][4]

5. Structural drivers: why a ceasefire or armistice is hard

Even though we do not have detailed 2025–26 battlefield maps in the provided sources, the texts collectively highlight several structural obstacles:

Territorial disputes remain central.

The Trump‑era diplomacy has focused heavily on territorial questions—who controls what—and this has proved a sticking point.[2][5]

Responsible Statecraft/Defense Priorities recommend putting territorial issues aside initially and focusing on political/security guarantees, precisely because territory is so contentious.[2][5]

Grok response:

No ceasefire or armistice has been officially declared between Russia and Ukraine in 2026 as of June 19. Short-term truces (e.g., Easter and Victory Day pauses) occurred earlier in the year, but fighting has continued with mutual violations reported, and substantive negotiations remain stalled.[1][2]

Here is a list of 10 key recent sources:

Russia x Ukraine ceasefire by end of 2026? (Polymarket)
Description: Prediction market on a Russia-Ukraine ceasefire by Dec 31, 2026.
Published: Ongoing (updated as of June 19, 2026).
Summary: Traders price the probability of an official ceasefire agreement by year-end at just 25.5% (No at 74.5%), citing the Kremlin’s May 9 statement that “peace remains a very long way off” despite the short US-brokered May truce and prisoner swap. Persistent airstrikes, ground offensives, and stalled diplomacy over territory and guarantees support expectations of continued hostilities. The market defines resolution as a publicly announced, mutually agreed halt in military engagement.[1]
2026 United States–Ukraine–Russia meetings in Geneva (Wikipedia)
Description: Overview of trilateral talks.
Published: Updated as of June 19, 2026.
Summary: Zelenskyy conditioned elections on a ceasefire and security guarantees; he indicated readiness for a two-month ceasefire and noted military negotiators were close to a draft on ceasefire monitoring. Progress in Geneva was limited per Axios reporting, though discussions on monitoring mechanisms were described as constructive. No full agreement emerged from the rounds.[3]
How a Russia–Ukraine ceasefire could imperil Ukrainian and European security (Chatham House)
Description: Analysis of ceasefire risks.
Published: May 28, 2026.
Summary: A rushed or poorly defined ceasefire could allow Russia to regroup and rearm while shifting to disruptive actions against Ukraine. Pressure from the US for a “quick win” might re-emerge, posing security risks without addressing root issues. A ceasefire would not end the war but merely pause hostilities temporarily.[4]
Trump hopes for extension to agreed three-day Ukraine-Russia ceasefire (Reuters)
Description: Report on the May 2026 truce.
Published: May 9, 2026 (updated).
Summary: Russia and Ukraine confirmed a US-brokered three-day ceasefire (May 9–11) including a 1,000-prisoner swap per side; Trump hoped for an extension. Both sides later accused each other of violations amid ongoing strikes. This followed unilateral Victory Day proposals and short pauses.[2]
Russia and Ukraine agree to 32-hour Orthodox Easter ceasefire (Al Jazeera)
Description: Coverage of the April truce.
Published: April 10, 2026.
Summary: Putin announced and Zelenskyy confirmed a 32-hour pause from April 10–11 for Easter celebrations. It was one of several short unilateral or bilateral pauses amid stalled broader diplomacy and mounting war pressures. Fighting resumed afterward.[5]
Peace negotiations in the Russo-Ukrainian war (Wikipedia)
Description: Summary of ongoing talks including 2026 developments.
Published: Updated as of June 19, 2026.
Summary: Zelenskyy has proposed an unlimited unconditional ceasefire since March 2025; Putin has refused without meeting Russia’s demands. Brief 2026 ceasefires included the April Easter pause and May Victory Day efforts, which saw continued Russian attacks and mutual accusations. No comprehensive agreement has been reached.[6]
Ukraine war: Russia intensifies attacks despite talk of peace negotiations (International Bar Association)
Description: Recent frontline and diplomacy update.
Published: June 17, 2026.
Summary: In early June the Kremlin rejected Zelenskyy’s call for new peace talks. Putin dismissed a meeting until Kyiv withdraws from occupied territories and abandons NATO ambitions. Russia has continued intensifying attacks.[7]
Ukraine, Russia trade fire as Zelenskyy allies back call for direct talks (Al Jazeera)
Description: June 2026 diplomacy push.
Published: June 8, 2026.
Summary: Zelenskyy’s June 5 open letter proposed a face-to-face meeting with Putin and a “full ceasefire” during negotiations. UK, France, and Germany backed direct talks in a joint statement. Drone attacks and fighting continued alongside the diplomatic efforts.[8]
Zelenskyy asks Putin for meeting (Al Jazeera)
Description: Details on the June 5 open letter.
Published: June 5, 2026.
Summary: Zelenskyy proposed a personal meeting and stated Ukraine is “ready for a full ceasefire for the duration of the negotiations.” He argued the war had become unsustainable and warned Ukraine would continue fighting otherwise. Russia’s response has emphasized its maximalist territorial and security demands.[9]
Putin on Ukraine war, Trump, peace and power (Reuters)
Description: Putin’s June 4 comments.
Published: June 4, 2026.
Summary: Putin stated Russia is “ready and willing to reach an agreement with Ukraine by peaceful means” on the basis of prior Trump discussions, which he said could form the basis for ending the conflict. However, extreme demands persist and no ceasefire has been implemented. Talks remain far apart on core issues.[10]

Recent updates (mid-June 2026) show continued Russian rejection of unconditional ceasefires, intensified attacks, and Zelenskyy’s renewed push for direct talks backed by European allies, but no movement toward an official, mutually agreed ceasefire or armistice. Prediction markets reflect low odds for a deal by year-end. Short pauses earlier in 2026 did not lead to broader agreements.

Extracted resolution criteria links:
[]

GPT Binary response:

The base case is still no. As of mid-June 2026, the war is active, strikes are ongoing, and the best-reported diplomatic track is stalled. Putin’s demands remain maximalist; Kyiv still wants security guarantees and resists territorial concessions; outside mediation has not yet produced a credible framework. If nothing materially changes, there is no ceasefire or armistice before year-end.

But the resolution bar here is lower than “peace deal” and lower than RAND’s stricter 30-day/all-territory standard. This question only needs an officially declared ceasefire or armistice, reported by major outlets, sometime after today. That matters a lot. In 2026 there were already short bilateral pauses earlier in the year, which shows the parties can still announce brief truces even while the broader war continues and violations follow immediately. So the main “Yes” path is not a Korea-style armistice; it is another short, formal pause tied to talks, exchanges, a holiday, or outside pressure.

My decomposition:

Comprehensive armistice or broad open-ended ceasefire: low, about 6%.
The political gap is still huge, and nothing in the reporting suggests a near-term breakthrough.
Short bilateral ceasefire tied to negotiations, prisoner swaps, or summit diplomacy: about 14%.
This is the most plausible positive path.
Narrower temporary ceasefire or operational pause that is still clearly official and major-news-reportable: about 7%.
Because this market appears broad enough to count a regional/limited ceasefire, this is a real route.

That gets me to roughly 27%.

Time-slicing the forecast:

By end of August 2026: about 8%
By end of September 2026: about 12%
By end of December 2026: about 27%
If the horizon were end of 2027 instead: I’d be around 45%

Why not higher, despite earlier short truces? Because those earlier pauses seem more like exceptional, symbolic, or externally pressured episodes than the start of a durable pattern. And with only a bit over six months left, “nothing changes” deserves heavy weight.

Key assumptions that could most change this forecast:

Assumption: No major diplomatic breakthrough occurs in late 2026.
Chance this assumption is wrong: 22%.
If wrong, the forecast rises substantially.
Assumption: Earlier 2026 short truces were not the beginning of recurring episodic ceasefires.
Chance this assumption is wrong: 28%.
If wrong, the forecast rises meaningfully, because even one more brief official pause is enough.
Assumption: Resolution will effectively require a mutual, clearly bilateral official declaration, not just a unilateral pause.
Chance this assumption is wrong: 12%.
If wrong, the chance of a Yes goes up somewhat.

Netting it out: the status quo is strongly negative, but the resolution criteria are permissive enough that a short formal ceasefire remains quite live.

Probability: 27%

The extracted probability is: 27%

GPT Binary response:

The key point is that this question is materially easier to resolve YES than a “peace deal” question or a “nationwide ceasefire lasting 30 days” question.

What matters here is simply whether, after today and before year-end, Russia and Ukraine officially declare either:

a ceasefire, even if temporary or limited, or
an armistice,

and that major news outlets report it.

Why I’m not low-single-digits:

We already have evidence from 2026 that short bilateral pauses are possible: the Easter pause and the May three-day truce. Those do not count now because they were before today, but they show that formal, time-limited declarations are not hypothetical.
The resolution wording appears broad enough that a short or geographically limited ceasefire could count.
There are active, if failing, diplomatic channels; “close to draft on monitoring” and repeated public ceasefire proposals mean there is at least some machinery for a limited pause.

Why I’m still well below 50:

The default state is continued war. As of mid-June 2026, hostilities remain intense, with missile/drone attacks continuing.
Putin’s terms remain maximalist, and multiple current analyses describe the main diplomatic track as stalled or counterproductive.
Markets are pessimistic: roughly mid-teens for a peace deal and mid-20s for a ceasefire-before-2027 contract. Those are highly relevant anchors.

My synthesis:

Full armistice or broad open-ended ceasefire by Dec 31: still relatively unlikely.
But the chance of some narrower, official bilateral ceasefire declaration over the next 6.5 months is real enough to push this above the peace-deal odds.

Rough decomposition:

Broad armistice / substantial front-wide ceasefire: about 8%
Narrow or time-limited officially declared ceasefire: about 20%
No qualifying declaration: about 72%

Shorter-horizon view:

By end of July: about 5%
By end of September: about 13%
By end of November: about 21%
By end of December: about 28%

Assumptions most likely to be wrong and most impactful:

Assumption: the current stalled diplomacy remains stalled rather than suddenly producing a symbolic truce.

Chance this assumption is wrong: about 30%
If wrong, forecast rises materially.

Assumption: recent short truces were exceptional rather than a template for future limited ceasefires.

Chance this assumption is wrong: about 35%
If wrong, the probability should be noticeably higher.

Assumption: Russia continues to prefer battlefield pressure over even a temporary bilateral pause.

Chance this assumption is wrong: about 25%
If wrong, a limited ceasefire becomes much more plausible.

Given the broad resolution wording, the demonstrated existence of short 2026 pauses, and the still very unfavorable diplomatic baseline, my best forecast is:

Probability: 28%

The extracted probability is: 28%

Anthropic Binary response:

Analysis: Ukraine Ceasefire/Armistice in 2026

Current Situation Assessment (as of June 19, 2026)

The war remains actively ongoing with high-intensity fighting:

Russian drone/missile attacks continue, killing 10+ civilians as recently as June 15, 2026
No ceasefire currently in effect
Putin rejected Zelenskyy’s June 5 ceasefire proposal
Russia demands Ukraine withdraw from occupied territories and abandon NATO ambitions before talks

Key Evidence Points

Precedent of Short Ceasefires in 2026:

April 10-11: 32-hour Orthodox Easter bilateral ceasefire (officially declared)
May 9-11: 3-day US-brokered bilateral ceasefire (with violations)

Both were formally agreed upon and reported by major outlets, potentially meeting the resolution criteria for “officially declared” ceasefires.

Diplomatic Activity:

Geneva trilateral talks ongoing; draft ceasefire monitoring mechanisms reportedly under discussion
UK, France, Germany backing direct talks (June 8)
Zelenskyy proposed “full ceasefire during negotiations” (June 5)
However, US-led diplomatic track widely assessed as “failing” and “counterproductive”

Prediction Market Data:

Polymarket: 25.5% for ceasefire by end of 2026
Lines.com: ~16% for peace deal by end of 2026

Critical Assumptions & Risk Assessment

Resolution criteria breadth – The question accepts “either a ceasefire or armistice officially declared,” including temporary/regional ones. This is broader than the RAND or Lines.com criteria.

Risk this assumption is wrong: ~15%

Pattern of short ceasefires will continue – Two bilateral pauses occurred in first 5.5 months. With 6.5 months remaining, base rate suggests similar pauses are possible.

Risk this pattern breaks: ~40% (given recent Russian rejections and hardening positions)

No breakthrough in substantive negotiations – Structural obstacles (territory, security guarantees) remain unresolved.

Risk of surprise breakthrough: ~15%

Probability Calculation

Scenario Analysis:

P(substantive armistice/major ceasefire): ~15-20% (markets, diplomatic assessments)
P(another short bilateral ceasefire like Easter/Victory Day): ~25-35%
P(no declared ceasefire at all): ~55-60%

Considerations:

6.5 months is substantial time for another short pause
Diplomatic channels remain active despite setbacks
Prediction markets reflect informed trader assessment at ~25%
Recent Russian rejections suggest hardening since May
Historical pattern: 35% of questions resolve positively (calibration factor)

Key Differentiator: The resolution criteria is notably broader than market questions about “peace deals” – it would accept even short, partial ceasefires. This suggests probability should be somewhat higher than the 16-25% market range for more substantive agreements.

However, the explicit constraint that the event must occur after June 19, 2026 (not just “in 2026”) means the already-declared Easter and May ceasefires don’t count toward resolution.

Given recent hardening of Russian positions, ongoing high-intensity combat, and diplomatic stalemates – but balanced against 6.5 months of remaining time, active channels, and precedent of short pauses – I estimate a moderate probability.

Probability: 32%
The extracted probability is: 32%

Anthropic Binary response:

Analysis: Ukraine Ceasefire/Armistice in 2026

Current Situation Assessment (as of June 19, 2026)

The war remains actively ongoing with no comprehensive ceasefire in place. Key facts:

Active hostilities: Russian drone/missile attacks killed at least 10 civilians on June 15, 2026
Earlier short ceasefires in 2026 (before June 19):

32-hour Easter ceasefire (April 10-11)
3-day Victory Day ceasefire (May 9-11) – both collapsed with mutual violations

Diplomatic stagnation:

Putin rejected Zelenskyy’s June 5 offer for direct talks and “full ceasefire during negotiations”
Kremlin stated “peace remains a very long way off” (May 9)
US-led efforts described as “stalled” and “destined to fail”

Time Remaining

There are approximately 6.4 months between June 19, 2026 and December 31, 2026 for a qualifying event to occur.

Market and Expert Views

Polymarket: 25.5% for ceasefire by end of 2026
Lines.com: ~16% for peace deal by end of 2026
Expert analysis: Diplomatic process has “created new obstacles to a near-term armistice”

Resolution Criteria Analysis

The question requires only that “a ceasefire or armistice is officially declared between Russia and Ukraine…as reported by major news outlets.” The background clarifies that:

Temporary ceasefires count
Regional ceasefires count
A full armistice is not required

Key Assumptions to Test

Hardened positions will persist: Putin’s maximalist demands (withdrawal from occupied territories, no NATO) appear entrenched. Probability this changes dramatically: ~20%
No major holidays will prompt short truces: Orthodox Christmas falls on January 7, 2027 (outside timeframe), but other occasions could arise. Probability of at least one short ceasefire: ~25-30%
External pressure won’t force a pause: G7 and European efforts are ongoing but haven’t produced results. Probability of breakthrough: ~15%

Probability Assessment

Factors suggesting YES (higher probability):

Two short ceasefires already occurred in 2026 (demonstrating the pattern is possible)
6+ months remaining provides time for various opportunities
Continued diplomatic pressure from Europe and US
Zelenskyy actively pushing for talks
Low bar for resolution (temporary/regional ceasefires count)

Factors suggesting NO (lower probability):

Diplomatic positions have hardened since May
Putin explicitly rejected recent proposals
Main negotiation tracks are failing
Prediction markets show skepticism (25.5% Polymarket)
No concrete ceasefire framework currently on the table
Earlier ceasefires collapsed quickly

Final Calculation

The Polymarket price of 25.5% appears to be for the full year and may require more substantial ceasefires. Given:

The question’s low bar (temporary/regional ceasefires qualify)
The pattern established earlier in 2026
But the hardened positions since June
About 6.4 months remaining

I estimate the probability is slightly higher than the market consensus because temporary ceasefires explicitly qualify, but I’m accounting for:

Historical overconfidence correction
The 35% base rate for positive resolutions
The genuine hardening of diplomatic positions

Probability: 30%
The extracted probability is: 30%

Anthropic Binary response:

Analysis: Ukraine Ceasefire/Armistice in 2026

Current Situation Assessment (as of June 19, 2026)

The research clearly establishes several important facts:

No comprehensive ceasefire is currently in effect – Fighting continues actively with Russian missile/drone attacks killing civilians as recently as June 15, 2026.
Short-term ceasefires HAVE occurred in 2026:

April 10-11: 32-hour Orthodox Easter ceasefire (Putin announced, Zelenskyy confirmed)
May 9-11: 3-day US-brokered ceasefire with prisoner swap

Diplomatic status:

US-led talks described as “stalled” and “counterproductive”
Putin rejected unconditional ceasefire (June 2026)
Zelenskyy proposed direct meeting with Putin (June 5)
European allies backing calls for talks

Resolution Criteria Interpretation

The question asks: “Will a ceasefire or armistice be officially declared between Russia and Ukraine at any point in 2026?”

Critically, the question specifies the event must happen after today (June 19) and before December 31, 2026. This means the April and May 2026 short-term ceasefires don’t count toward resolution.

The bar is relatively low – any official bilateral declaration counts, including short-term or regional ceasefires.

Market Signals

Polymarket: ~25.5% for ceasefire by end of 2026
Lines.com: ~16% for “peace deal” by end of 2026

These markets may be pricing stricter outcomes than this question requires.

Timeline Analysis

Remaining time: ~6.5 months (June 19 – December 31)

Historical rate from 2026: 2 ceasefires declared in ~5 months = ~0.4 per month base rate

Potential occasions for short-term pauses:

Religious holidays (Orthodox Christmas in January is outside window, but Christmas/New Year timeframe possible)
Ukrainian Independence Day (August 24)
Diplomatic breakthroughs at summits
Humanitarian corridors during harsh winter

Critical Assumptions and Risk Assessment

Short-term holiday ceasefires remain viable – Probability of failure: ~35%. If Putin completely refuses any further negotiations, even short pauses become unlikely.
Diplomatic engagement continues at some level – Probability of failure: ~20%. Complete breakdown of all diplomatic channels would eliminate ceasefire opportunities.
Both sides maintain some interest in appearing to seek peace – Probability of failure: ~15%. Both have domestic/international incentives to demonstrate willingness.

Probability Calculation

Given:

Two ceasefires already occurred earlier in 2026 (demonstrating willingness)
6.5 months remaining with potential holiday/diplomatic occasions
Zelenskyy actively calling for talks and ceasefires
Ongoing (if stalled) diplomatic engagement
But: Putin rejecting unconditional talks, Russia intensifying attacks, structural obstacles remain massive

The low bar (any declared ceasefire, even short) suggests higher probability than markets pricing comprehensive deals.

For shorter timeline (3 months): ~22%
For remaining 6.5 months: ~35%
For full year if we started from January: ~55%

Adjustments

Compensating for historical overconfidence: -5%
Markets consistently showing lower probabilities: -3%
But question has lower bar than market definitions: +5%
Precedent from earlier 2026: +3%

Final Assessment

The combination of demonstrated willingness for short-term pauses earlier in 2026, ongoing diplomatic pressure (especially from Europe), and the low resolution bar suggests moderate probability. However, structural obstacles, Putin’s current intransigence, and market signals urge caution.

Probability: 35%
The extracted probability is: 35%

Gemini Binary response:

Forecasting Rationale

1. Initial Analysis & Anchor Points

My initial forecast is anchored by quantitative data from prediction markets, which provide a direct, real-time aggregate of crowd-sourced probability.

Polymarket: A prediction market for a “Russia x Ukraine ceasefire by end of 2026” is currently trading at approximately 26%. This is the most direct data point, as its resolution criteria are very similar to the question at hand. This market suggests roughly a 1-in-4 chance.
Lines.com: A separate market for a more stringent “peace deal by end of 2026” shows a lower probability of around 16%. This serves as a logical lower bound; a full peace deal is much less likely than a temporary ceasefire or armistice.

Based on this, my starting point is a probability in the mid-20s. I will now analyze qualitative factors to adjust this initial assessment.

2. Factors Increasing the Probability of a Ceasefire/Armistice (Arguments for YES)

Precedent of Short-Term Ceasefires in 2026: Crucially, officially declared, short-term bilateral ceasefires have already occurred this year. A 32-hour truce was declared for Orthodox Easter in April, and a more significant three-day, US-brokered ceasefire accompanied a large prisoner swap in May. The resolution criteria for this question are broad enough that a repeat of such an event—even one that is short-lived and immediately violated—would cause it to resolve as “Yes.” The Christmas/New Year holiday period presents another plausible window for a similar, largely symbolic declaration.
Sustained Ukrainian Diplomatic Push: Throughout June 2026, President Zelenskyy has been actively and publicly calling for direct talks with Russia, proposing a “full ceasefire for the duration of the negotiations”. This diplomatic initiative is reportedly backed by key European allies, creating consistent pressure for a pause in fighting.
Potential for Tactical Pauses: A ceasefire does not necessarily have to be a step toward peace. It can be a tactical tool used to facilitate prisoner exchanges, allow troops to regroup, or serve as a public relations move. The May ceasefire and prisoner swap is a clear example of this. Both sides may see an interest in another such limited, transactional pause before the end of the year.

3. Factors Decreasing the Probability of a Ceasefire/Armistice (Arguments for NO)

Russia’s Hardline Stance: This is the most significant barrier. The Kremlin has repeatedly rejected calls for talks without preconditions, insisting that Kyiv must accept Russia’s territorial claims and abandon its NATO aspirations. In early June, Russia dismissed Zelenskyy’s latest call for talks and simultaneously intensified attacks, indicating that its military strategy is not aligned with a pause. Putin’s stated readiness for talks is contradicted by these maximalist demands and battlefield actions.
Failure and Violation of Past Ceasefires: The brief ceasefires in April and May quickly collapsed amid mutual accusations of violations, followed by a resumption of intense fighting. This history may reduce the appetite on both sides for future attempts, viewing them as ineffective or as opportunities for the enemy to gain an advantage.
Stalled High-Level Diplomacy: The primary U.S.-led diplomatic track has been described as stalled and even counterproductive. While European leaders are attempting to reset the approach, there is no evidence of a new, viable framework for a ceasefire being close to agreement.

4. Synthesis & Final Probability

While the strategic impasse and Russia’s current posture make a durable, long-term armistice highly unlikely, the question is broader. The low bar for resolution—any officially declared ceasefire, however temporary—is the key factor.

The prediction market at ~26% accurately captures the overall pessimism about a meaningful end to hostilities. However, it may be slightly under-pricing the possibility of a “low-quality” ceasefire—a short, symbolic, or tactical pause similar to those already seen in 2026. The precedent is strong: these events are not impossible; they have happened twice in the first half of the year.

Given the remaining 6.5 months and the potential for a holiday truce or another prisoner-swap-related pause, the probability is likely slightly higher than the market anchor. The Ukrainian push for talks creates constant opportunities for such a declaration to emerge, even if Russia’s strategic intent remains hostile.

I am therefore adjusting my forecast slightly upward from the market consensus. I assess that the factors making a short, tactical ceasefire possible are being slightly underestimated relative to the strong, and correct, consensus that a major peace breakthrough is not imminent.

Probability: 29%

The extracted probability is: 29%

GPT Binary response:

The key forecasting question is not “Will the war end?” but the much narrower and easier-to-satisfy “Will there be any officially declared ceasefire or armistice between Russia and Ukraine after today and before year-end?”

That distinction matters a lot.

Why the base case is still No

As of mid-June 2026, the war is still hot: ongoing missile/drone strikes, continued frontline fighting, and no ceasefire in force.
Recent reporting says diplomacy is stalled, and the main U.S.-led process has not produced a durable breakthrough.
Putin is still attaching maximalist conditions; Ukraine still wants security guarantees and rejects those terms.
Prediction-market signals for a formal peace arrangement are low, and even the more specific ceasefire market is only around the mid-20s.

If nothing important changes, the default path is continued war through December.

Why Yes is still meaningfully live

This question is easier than “peace deal” or “30-day nationwide ceasefire.”
It appears to count a short or limited bilateral ceasefire if it is officially declared and major outlets report it.
There is direct precedent: earlier in 2026 there were short bilateral pauses/truces. Those do not count now because they are in the past, but they show that a qualifying declaration is possible.
There are still several plausible windows:

a negotiations-linked temporary ceasefire,
a humanitarian/prisoner-swap pause,
a symbolic holiday truce late in the year,
a limited front/sector pause that media still describe as a ceasefire between the parties.

So an armistice is very unlikely, but a brief officially declared ceasefire is materially more plausible.

My rough timeline view

By end of July: low single digits to around 10
By end of September: mid-teens
By end of December: high-20s
By end of 2027: would be much higher than this question, because more time strongly helps

Important assumptions that could most change the forecast

Russia continues to prefer fighting over compromise through year-end.
Chance this assumption is wrong: about 30.
If wrong, odds rise sharply.
The resolution really will count a short/limited bilateral ceasefire, not only a broad nationwide pause.
Chance this assumption is wrong or misapplied: about 15.
If wrong, odds fall materially.
Current diplomacy remains mostly unproductive rather than suddenly yielding a monitoring or prisoner-swap framework that expands into a ceasefire.
Chance this assumption is wrong: about 25.
If wrong, odds rise meaningfully.

Netting it out: the default remains continued war, but the bar for resolution is low enough that I should not be down near “peace deal” odds. I land modestly above the market-implied peace-settlement view, but still clearly below 50.

Probability: 29%

The extracted probability is: 29%

All predictions: [27, 28, 29, 29, 30, 32, 35]
Filtered predictions: [29, 29, 30]

Median reasoning:

Forecasting Rationale

1. Initial Analysis & Anchor Points

My initial forecast is anchored by quantitative data from prediction markets, which provide a direct, real-time aggregate of crowd-sourced probability.

Polymarket: A prediction market for a “Russia x Ukraine ceasefire by end of 2026” is currently trading at approximately 26%. This is the most direct data point, as its resolution criteria are very similar to the question at hand. This market suggests roughly a 1-in-4 chance.
Lines.com: A separate market for a more stringent “peace deal by end of 2026” shows a lower probability of around 16%. This serves as a logical lower bound; a full peace deal is much less likely than a temporary ceasefire or armistice.

Based on this, my starting point is a probability in the mid-20s. I will now analyze qualitative factors to adjust this initial assessment.

2. Factors Increasing the Probability of a Ceasefire/Armistice (Arguments for YES)

Precedent of Short-Term Ceasefires in 2026: Crucially, officially declared, short-term bilateral ceasefires have already occurred this year. A 32-hour truce was declared for Orthodox Easter in April, and a more significant three-day, US-brokered ceasefire accompanied a large prisoner swap in May. The resolution criteria for this question are broad enough that a repeat of such an event—even one that is short-lived and immediately violated—would cause it to resolve as “Yes.” The Christmas/New Year holiday period presents another plausible window for a similar, largely symbolic declaration.
Sustained Ukrainian Diplomatic Push: Throughout June 2026, President Zelenskyy has been actively and publicly calling for direct talks with Russia, proposing a “full ceasefire for the duration of the negotiations”. This diplomatic initiative is reportedly backed by key European allies, creating consistent pressure for a pause in fighting.
Potential for Tactical Pauses: A ceasefire does not necessarily have to be a step toward peace. It can be a tactical tool used to facilitate prisoner exchanges, allow troops to regroup, or serve as a public relations move. The May ceasefire and prisoner swap is a clear example of this. Both sides may see an interest in another such limited, transactional pause before the end of the year.

3. Factors Decreasing the Probability of a Ceasefire/Armistice (Arguments for NO)

Russia’s Hardline Stance: This is the most significant barrier. The Kremlin has repeatedly rejected calls for talks without preconditions, insisting that Kyiv must accept Russia’s territorial claims and abandon its NATO aspirations. In early June, Russia dismissed Zelenskyy’s latest call for talks and simultaneously intensified attacks, indicating that its military strategy is not aligned with a pause. Putin’s stated readiness for talks is contradicted by these maximalist demands and battlefield actions.
Failure and Violation of Past Ceasefires: The brief ceasefires in April and May quickly collapsed amid mutual accusations of violations, followed by a resumption of intense fighting. This history may reduce the appetite on both sides for future attempts, viewing them as ineffective or as opportunities for the enemy to gain an advantage.
Stalled High-Level Diplomacy: The primary U.S.-led diplomatic track has been described as stalled and even counterproductive. While European leaders are attempting to reset the approach, there is no evidence of a new, viable framework for a ceasefire being close to agreement.

4. Synthesis & Final Probability

Probability: 29%

=== Forecast Result ===
{
“probability_yes”: 0.29333333333333333,
“probability_yes_per_category”: null,
“continuous_cdf”: null
}

=== Reasoning ===

Forecasting Rationale

1. Initial Analysis & Anchor Points

My initial forecast is anchored by quantitative data from prediction markets, which provide a direct, real-time aggregate of crowd-sourced probability.

Polymarket: A prediction market for a “Russia x Ukraine ceasefire by end of 2026” is currently trading at approximately 26%. This is the most direct data point, as its resolution criteria are very similar to the question at hand. This market suggests roughly a 1-in-4 chance.
Lines.com: A separate market for a more stringent “peace deal by end of 2026” shows a lower probability of around 16%. This serves as a logical lower bound; a full peace deal is much less likely than a temporary ceasefire or armistice.

Based on this, my starting point is a probability in the mid-20s. I will now analyze qualitative factors to adjust this initial assessment.

2. Factors Increasing the Probability of a Ceasefire/Armistice (Arguments for YES)

Precedent of Short-Term Ceasefires in 2026: Crucially, officially declared, short-term bilateral ceasefires have already occurred this year. A 32-hour truce was declared for Orthodox Easter in April, and a more significant three-day, US-brokered ceasefire accompanied a large prisoner swap in May. The resolution criteria for this question are broad enough that a repeat of such an event—even one that is short-lived and immediately violated—would cause it to resolve as “Yes.” The Christmas/New Year holiday period presents another plausible window for a similar, largely symbolic declaration.
Sustained Ukrainian Diplomatic Push: Throughout June 2026, President Zelenskyy has been actively and publicly calling for direct talks with Russia, proposing a “full ceasefire for the duration of the negotiations”. This diplomatic initiative is reportedly backed by key European allies, creating consistent pressure for a pause in fighting.
Potential for Tactical Pauses: A ceasefire does not necessarily have to be a step toward peace. It can be a tactical tool used to facilitate prisoner exchanges, allow troops to regroup, or serve as a public relations move. The May ceasefire and prisoner swap is a clear example of this. Both sides may see an interest in another such limited, transactional pause before the end of the year.

3. Factors Decreasing the Probability of a Ceasefire/Armistice (Arguments for NO)

Russia’s Hardline Stance: This is the most significant barrier. The Kremlin has repeatedly rejected calls for talks without preconditions, insisting that Kyiv must accept Russia’s territorial claims and abandon its NATO aspirations. In early June, Russia dismissed Zelenskyy’s latest call for talks and simultaneously intensified attacks, indicating that its military strategy is not aligned with a pause. Putin’s stated readiness for talks is contradicted by these maximalist demands and battlefield actions.
Failure and Violation of Past Ceasefires: The brief ceasefires in April and May quickly collapsed amid mutual accusations of violations, followed by a resumption of intense fighting. This history may reduce the appetite on both sides for future attempts, viewing them as ineffective or as opportunities for the enemy to gain an advantage.
Stalled High-Level Diplomacy: The primary U.S.-led diplomatic track has been described as stalled and even counterproductive. While European leaders are attempting to reset the approach, there is no evidence of a new, viable framework for a ceasefire being close to agreement.

4. Synthesis & Final Probability

Probability: 29%

End

Phillip Godzin’s pgodzinai forecasts 29%

Perplexity response:

1. Current state of the war (military situation up to mid‑June 2026)

2. Diplomatic track: what has been tried and why it’s stalled

2.1 U.S.‑led negotiations under Trump

2.2 European efforts at the G7 (June 2026)

3. How experts and markets view the chance of a 2026 settlement

3.1 Prediction markets

3.2 Structured forecasting (RAND question)

4. Definitions: ceasefire vs armistice vs peace deal (and how media would report them)

5. Structural drivers: why a ceasefire or armistice is hard

Grok response:

GPT Binary response:

Analysis: Ukraine Ceasefire/Armistice in 2026

Current Situation Assessment (as of June 19, 2026)

Key Evidence Points

Critical Assumptions & Risk Assessment

Probability Calculation

Analysis: Ukraine Ceasefire/Armistice in 2026

Current Situation Assessment (as of June 19, 2026)

Time Remaining

Market and Expert Views

Resolution Criteria Analysis

Key Assumptions to Test

Probability Assessment

Final Calculation

Analysis: Ukraine Ceasefire/Armistice in 2026

Current Situation Assessment (as of June 19, 2026)

Resolution Criteria Interpretation

Market Signals

Timeline Analysis

Critical Assumptions and Risk Assessment

Probability Calculation

Adjustments

Final Assessment

Forecasting Rationale

Forecasting Rationale

Forecasting Rationale

Probability: 29%

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