Phillip Godzin’s pgodziai forecasts 44%

This is the full report. Condensed version here.

Perplexity response:

# Analysis of Ceasefire/Armistice Prospects for Ukraine in 2026

Summary of Key Sources

Citation	Title	Publication Date	Summary
[1]	UN Secretary-General Statement on Fourth Anniversary of Russian Invasion	February 23, 2026	The UN Secretary-General reiterates calls for an “immediate, full and unconditional ceasefire” as a first step toward lasting peace. Notably, 2025 witnessed the largest number of civilian deaths in Ukraine since the invasion began. The statement emphasizes that any peace settlement must respect Ukraine’s independence, sovereignty, and territorial integrity in accordance with the UN Charter.
[2]	Russia’s Aggression in Ukraine Will Persist Through 2026 (RUSI)	Recent analysis	RUSI assesses that Russia plans to sustain the war into 2027 and currently perceives negotiations as a tool to divide the transatlantic alliance. Under current conditions, it is “more dangerous in both Kyiv and the Kremlin to stop fighting.” The analysis suggests that unless Russia suffers significantly higher casualties or economic pain, aggression will continue, and any ceasefire agreement faces durability concerns.
[3]	G7 Leaders and Coalition of the Willing Statement	February 2026	G7 leaders welcomed US-led peace negotiation efforts and urged Russia to engage “in a meaningful way” and agree to a “full, unconditional ceasefire.” The statement reaffirmed the Coalition of the Willing’s commitment to providing “multi-layered security guarantees” and establishing a Multinational Force for Ukraine, agreements reached at their January 2026 Paris meeting.
[4]	Ukraine: High-Level Briefing (Security Council Report)	February 2026	A third round of trilateral talks occurred in Geneva on February 17-18, 2026, where parties discussed technical modalities for ceasefire monitoring, with Ukraine reportedly agreeing that the US would assume primary responsibility for oversight. However, core political issues regarding territorial control and security guarantees remain unresolved, despite procedural progress.
[5]	UN General Assembly Resolution on Fourth Anniversary	February 2026	The General Assembly adopted a resolution titled “Support for lasting peace in Ukraine” by a vote of 107 in favor to 12 against with 51 abstentions, calling for “an immediate ceasefire between the Russian Federation and Ukraine” and the release of all unlawfully detained persons and forcibly transferred civilians.
[6]	Four Years of Full-Scale War in Ukraine (EU EEAS)	February 2026	The EU emphasizes that “Ukraine has consistently demonstrated its readiness for peace…while Russia has refused to do so and continues its war of aggression.” The statement asserts that 2026 must be the year aggression ends and that no peace arrangement can be sustainable without Ukraine’s participation.
[7]	Four Years of War, No End in Sight (Mick Ryan)	February 22, 2026	According to recent reports, “every power plant in Ukraine has been damaged” as of February 2026. President Zelenskyy stated that trilateral talks achieved agreement on ceasefire monitoring mechanics with the US leading oversight, though this represents procedural rather than political progress. Reports indicate Zelenskyy directed planning for three more years of war, suggesting limited confidence in near-term peace negotiations.
[8]	For Four Years, Ukraine Has Resisted (France ONU)	February 2026	France’s UN delegation welcomed the Secretary-General’s call for “an immediate, full and unconditional ceasefire” and noted the General Assembly’s adoption of Ukraine’s resolution supporting this position. The statement emphasizes the international consensus position that ceasefire must be unconditional and serve as a first step toward lasting peace.
[9]	2026 Securing Ukraine’s Future Symposium (CFR)	2026	Denmark’s government representative stated readiness to participate in security guarantees for Ukraine through the Coalition of the Willing once a ceasefire is achieved, contingent on prior ceasefire declaration. This reflects international preparedness for post-ceasefire arrangements but does not address the timing of ceasefire achievement.

Procedural Progress on Technical Matters: Negotiations have advanced on ceasefire monitoring mechanics, with trilateral talks in Geneva (February 17-18, 2026) reportedly achieving agreement that the US would oversee ceasefire implementation[4][7]. However, this represents agreement on how a ceasefire would be monitored, not agreement on whether one will be reached[7].

Fundamental Political Obstacles Remain Unresolved: Core disagreements persist on territorial control and security guarantees[4]. According to RUSI analysis, the US has proposed offering Ukraine security guarantees in exchange for abandoning the remainder of Donbas—territory described as Ukraine’s “defensive belt.” Withdrawal would force Ukrainian forces onto “unprepared and indefensible terrain,” making this proposal difficult for Kyiv to accept politically or militarily[2].

Divergent Strategic Assessments: Russia maintains a maximalist negotiating position and believes it can sustain the war into 2027[2]. The Kremlin perceives ongoing negotiations as a vehicle for dividing the transatlantic alliance rather than as a genuine path to peace[2]. Meanwhile, RUSI assessment concludes that “unless Russia suffers significantly higher casualties or greater economic pain its aggression will continue”[2].

International Consensus on Terms: The UN General Assembly (February 2026) voted 107-12 (with 51 abstentions) for a resolution calling for an “immediate, full, and unconditional ceasefire”[5], and this position is supported by the UN Secretary-General[1], the EU[6], the G7[3], and France[8]. However, international consensus on desired terms differs from Russian willingness to accept them.

Ukraine’s Position: President Zelenskyy has stated readiness for “real compromises” but not “at the cost of our independence and sovereignty,” rejecting both US ultimatums and Russian demands[7]. Reports that Zelenskyy directed planning for three more years of war suggest limited confidence in achieving a suitable peace settlement in the near term[7].

US-Europe Strategic Divergence: The US seeks a rapid ceasefire to enable economic re-engagement with Russia, while Europe fears that removing sanctions without Russian military de-escalation poses “grave risks,” given Russia’s spending approximately $500 billion annually on defense[2]. This transatlantic division weakens unified pressure on Russia.

The available evidence indicates significant gaps between negotiating positions remain as of late February 2026, despite procedural advances. While diplomatic channels are active, the fundamental political obstacles—particularly regarding territorial arrangements and security guarantees—have not been overcome.

Grok response:

1. Title: Russia says local truce established to enable repairs at Zaporizhzhia nuclear plant
   Description: Reuters article on a temporary local ceasefire at the Zaporizhzhia plant.
   Date of Publication: February 27, 2026 (6 hours ago)
   Summary: The Russian management of the Zaporizhzhia nuclear power plant announced a local truce with Ukraine to allow repairs to power lines, facilitated by IAEA head Rafael Grossi. This ceasefire is limited to the plant area and does not extend to the broader conflict. It highlights ongoing tactical pauses amid continued hostilities elsewhere.[1][2]
2. Title: Zelensky Says Next Round of Peace Talks With Russia Expected in March
   Description: The Moscow Times reports on upcoming direct talks.
   Date of Publication: February 27, 2026 (4 hours ago)
   Summary: Ukrainian President Zelenskyy stated that a new round of peace talks with Russia is expected in Abu Dhabi next month. This follows recent US-Ukraine discussions in Geneva on reconstruction amid stalled negotiations. Progress remains elusive due to disagreements over territory and security guarantees.[3]
3. Title: Russia x Ukraine ceasefire by end of 2026?
   Description: Polymarket prediction market odds for a ceasefire before 2027.
   Date of Publication: February 27, 2026 (accessed recently)
   Summary: Prediction market traders assign a 37% probability to a Russia-Ukraine ceasefire by the end of 2026, defined as a publicly announced mutual halt in military operations. Shorter-term markets show lower odds: 3% by March 31 and 7% by April 30, with earlier 2026 markets having resolved “No.” Volumes are high, indicating active interest and skepticism for near-term resolution.[4][5]
4. Title: How Russia-Ukraine Peace Talks Are at an Impasse Over Territory
   Description: Bloomberg analysis of current negotiation sticking points.
   Date of Publication: February 27, 2026 (4 hours ago)
   Summary: Talks are stalled primarily over control of Donbas, Crimea, and other annexed regions, with Russia demanding Ukrainian withdrawal from fortified eastern areas. Zelenskyy insists any deal requires parliamentary or referendum approval, where public opposition to concessions is strong. Ukraine proposes ceasefires along current frontlines, but Russia rejects without territorial gains.[6]
5. Title: Russia can keep fighting Ukraine war throughout 2026, says military thinktank
   Description: The Guardian on Russia’s sustainment capacity.
   Date of Publication: February 24, 2026
   Summary: A UK military thinktank assesses Russia can maintain its invasion through 2026 despite manpower shortages and economic pressures, intensifying attacks on infrastructure. Putin shows no urgency for peace, rejecting US ceasefire proposals. Ukraine faces challenges but receives continued Western aid commitments into 2026.[7]
6. Title: Ukraine agrees to multi-tiered ceasefire enforcement plan with West
   Description: Reuters on Ukraine’s preparedness for a potential truce.
   Date of Publication: February 3, 2026
   Summary: Ukraine has coordinated with Western partners on a multi-tiered monitoring system for any future ceasefire, including responses to Russian violations up to potential armistice. This preparation signals openness to a deal but requires Russian compliance. No such agreement has been reached with Moscow.[8]
7. Title: Zelensky tells BBC Putin has started WW3 and must be stopped
   Description: BBC interview with Zelenskyy on ceasefire conditions.
   Date of Publication: February 22, 2026
   Summary: Zelenskyy rejects Putin’s demands for Ukrainian withdrawal from strategic territories as a ceasefire precondition, framing the war as existential. He affirms Ukraine’s willingness to end victoriously but not through capitulation. Allies echoed calls for an unconditional Russian ceasefire.[9]
8. Title: Russia’s Aggression in Ukraine Will Persist Through 2026
   Description: RUSI commentary on Russian military economy.
   Date of Publication: February 23, 2026
   Summary: Russia’s war economy remains resilient short-term, funding operations via reserves despite sanctions, but vulnerabilities grow in 2026 with rising debt. Manpower is supplemented by mercenaries and convicts, though attrition is high (projected 2 million combined casualties by spring). No signs of culmination forcing ceasefire.[10]
9. Title: US pushes Russia and Ukraine to end war by summer, Zelenskiy says
   Description: Reuters on US diplomatic pressure.
   Date of Publication: February 7, 2026
   Summary: The US urged a ceasefire on energy infrastructure strikes as a de-escalation step toward full peace by summer, but Russia has not agreed. Zelenskyy noted persistent violations. Broader talks in Saudi Arabia showed limited progress on military issues like frontlines.[11]
10. Title: Russia–Ukraine War in 2026: At the Crossroads of Peace and War
    Description: ORF expert speak on 2026 outlook.
    Date of Publication: February 26, 2026
    Summary: 2026 could see a fragile ceasefire amid Trump’s diplomacy, but Russia’s maximalist demands clash with Ukraine’s security needs. Economic strains and mercenary reliance have not yet compelled Putin to concede. Recent Geneva talks ended without breakthrough, with next rounds pending.[12]

As of February 27, 2026, no full ceasefire or armistice has been officially declared between Russia and Ukraine by major news outlets, despite ongoing diplomatic efforts and local truces like the one at Zaporizhzhia nuclear plant.[1][13] The war marks its fourth anniversary this week, with Russia continuing slow advances in the east amid high attrition (estimated 500,000 total dead as of Feb 24; projected 2 million casualties by spring), infrastructure strikes, and Ukrainian counterattacks liberating small areas.[14][15][16]

Diplomatic Landscape: Talks are active but deadlocked. Zelenskyy announced next direct Russia-Ukraine round in Abu Dhabi early March, following Geneva (Feb 18, limited military progress) and US-Ukraine reconstruction discussions (Feb 26).[3][17][18] US pushes for energy ceasefire and war end by summer, with Trump claiming Putin agreed to halt energy strikes (unconfirmed by Moscow/Kyiv, Jan 29).[11][19] Ukraine prepared multi-tier enforcement (Feb 3) and offers frontline freeze, but rejects Russian demands for Donbas/Crimea withdrawal, neutrality without guarantees.[8][6] Putin insists on “root causes” (denazification, demilitarization, territorial recognition), signaling no rush.[20][21]

Russian Position and Capacity: Thinktanks (RUSI, Guardian) assess Russia can sustain war through 2026 via war economy (50% budget to military), oil revenues, and mercenaries/prisoner recruits, though recession risks loom (deficit 3.5-4.4% GDP).[10][22][23] No culmination evident; intensified attacks despite sanctions.[7]

Ukrainian/Western Stance: Zelenskyy conditions ceasefires on no capitulation, open to compromises post-election/martial law lift but firm on sovereignty; allies (EU, NATO) commit €90bn aid 2026-27, UNGA resolution (107-12) demands immediate ceasefire (US abstained).[9][24][25]

Markets/Experts: Polymarket odds favor continuation (63% no by year-end), reflecting impasse.[4] Analysts see 2026 as pivotal but predict persistence absent major shifts; no recent movement toward full declaration.[12][26] X discussions echo divides: Ukraine rejects surrender, Russia buys time.[27]

Extracted resolution criteria links:
[]

Extracted resolution criteria links:
[]

GPT Binary response:

Reasoning / rationale

Resolution hinges on an “officially declared” ceasefire/armistice (even if partial) between Russia and Ukraine, reported by major outlets, occurring at any time between now (2026-02-27) and 2026-12-31. It does not need to be durable.

1) Base rate and “default continuation”

• The default trajectory remains continued fighting: major sticking points (territory, security guarantees) are unresolved, and multiple credible analyses assess Russia can sustain operations through 2026 and that it is politically dangerous for both leaderships to stop under current conditions (RUSI; reporting summarized in your research).
• That default weighs heavily because ceasefires typically require a discrete inflection (battlefield shock, internal political/economic crisis, or a negotiated package that both sides can sell).

2) Evidence pointing toward some nontrivial chance of a declared ceasefire in 2026

• Negotiations are active and have shown procedural progress: talks reportedly addressed monitoring mechanics with the US positioned for oversight. That’s not a deal, but it’s the kind of groundwork that can enable a ceasefire once a political bargain appears.
• External pressure is real: the G7/UN/EU are publicly aligned on a ceasefire demand, and the US is pushing for de-escalatory steps (e.g., energy/infrastructure).
• “Any ceasefire” is broader than “full war-ending armistice”: the question allows a ceasefire that might cover only one region/sector of the front, which increases the probability relative to “comprehensive cessation of hostilities.”
• The reported local truce around Zaporizhzhia repairs is a reminder that narrowly-scoped pauses can be arranged; however, I treat that particular case as not clearly meeting the threshold of an “officially declared ceasefire between Russia and Ukraine” in the intended sense (it appears facility-specific and described via plant management/IAEA facilitation rather than a bilateral political declaration). Still, it raises the plausibility of future, more formal limited ceasefires.

3) Market / crowd signal (used cautiously)

• A relevant prediction market is around the high-30s for a ceasefire by end-2026 (with a narrower definition: “publicly announced mutual halt in military operations”).
• Because your resolution criteria plausibly include partial ceasefires, I adjust upward from that benchmark, but not dramatically—since the core political impasse remains the dominant constraint.

4) Scenario decomposition (my internal model)

• Comprehensive ceasefire/armistice declared (whole фронт): ~25–30%
  Requires a political package: security guarantees + territorial language both sides can live with, or a major shock forcing acceptance.
• Limited but official ceasefire declared (energy/Black Sea/humanitarian corridor/front subsection) that clearly qualifies as “between Russia and Ukraine”: ~10–15%
  More plausible than a full armistice, but still requires both sides to sign onto and publicly declare it.
• No qualifying declared ceasefire/armistice in 2026: remainder.

This yields a mid-40s probability.

5) Time-structure (because “unlikely things are especially unlikely soon”)

Given the current deadlock and only procedural progress, I weight the probability toward late 2026 rather than the next few months:

• By 2026-06-30: ~12%
• By 2026-09-30: ~25%
• By 2026-12-31: (the full-year probability below)

6) Key assumptions that could be wrong (and would swing the forecast)

1) Assumption: No major battlefield discontinuity forces a pause.
Failure probability: ~25%. If false (sudden Russian operational collapse, or Ukrainian inability to sustain), ceasefire odds rise materially.
2) Assumption: Russia’s leadership still prefers continuation over a frozen conflict in 2026.
Failure probability: ~30%. If Kremlin re-optimizes (economic stress, elite politics, external bargains), odds rise sharply.
3) Assumption: Ukraine and its partners maintain enough cohesion to avoid being pushed into a premature ceasefire.
Failure probability: ~30%. If Western support fractures or conditions tighten, Kyiv may accept a ceasefire framework it currently rejects—raising odds (even if unstable).

Accounting for these uncertainties, and correcting for my historical tendency toward overconfidence, I land in the mid-40s rather than >50.

Probability: 44%

The extracted probability is: 44%

GPT Binary response:

Current Assessment

Crucial assumptions & how they could be wrong

Assumption: No major Russian military/economic shock forces a pause in 2026.

• Probability this assumption is wrong: ~25%
• If wrong, “Yes” becomes much more likely (even if only a temporary ceasefire).

Assumption: Negotiations remain stuck on territory/security guarantees with no face-saving workaround.

• Probability wrong: ~30%
• If wrong (e.g., creative sequencing, guarantees, demarcation/monitoring package), a declared ceasefire/armistice could follow.

Assumption: Any localized truces will often be too ambiguous/unilateral to meet the “between Russia and Ukraine officially declared” criterion.

• Probability wrong: ~35%
• If wrong, then the broadness of the criterion (regional/temporary) would push the “Yes” probability notably higher.

Balancing these, I land in the mid-40s: meaningful chance, but the base case remains continuation without an official bilateral declaration that meets the criterion.

Probability: 44%

The extracted probability is: 44%

GPT Binary response:

Rationale

Resolution hinges on an “officially declared” ceasefire/armistice at any point in the rest of 2026, as covered by major outlets. That’s a relatively low bar compared with “war ends”: even a geographically limited, time-limited, or domain-limited ceasefire (e.g., energy, grain corridor, a nuclear plant safety zone) could qualify if it’s framed as a ceasefire/truce and is explicitly an arrangement between the sides.

1) Current state (late Feb 2026): active diplomacy, but core deadlock

• Multiple credible sources indicate procedural progress (monitoring/enforcement concepts) but no political breakthrough on territory/security guarantees, which are the binding constraints. The Geneva discussions on monitoring mechanics are meaningful, but they’re “how,” not “whether.”
• Major analyses (e.g., RUSI) and reporting emphasize that both Kyiv and Moscow face high internal/political costs to stopping without clear gains, and Russia believes it can sustain operations through 2026. That supports a low-to-moderate probability of a comprehensive ceasefire/armistice this year.

2) Countervailing factor: the bar includes partial/local ceasefires

• Reuters just reported a local truce around Zaporizhzhia NPP for repairs (but it occurred today, and the question requires the event to happen after today). Still, it is strong evidence that “officially declared, localized truces” are feasible in 2026 under IAEA/third-party facilitation.
• With continued infrastructure damage and high operational risk (energy grid, nuclear safety, prisoner exchanges, humanitarian corridors), the hazard rate for at least one more officially declared, limited ceasefire before year-end is non-trivial—even if a full front-wide cessation remains unlikely.

3) Base-rate / outside view

• Wars of this scale often produce attempted pauses (even if they fail quickly). Given (a) ongoing talks, (b) strong external pressure (US/G7/EU/UN), and (c) demonstrated ability to do narrow “repair/security” truces, the chance of some declared ceasefire/armistice in the remaining ~10 months is meaningfully above the generic “binary question” base rate.
• Prediction markets cited are around the high 30s for a ceasefire by end-2026 under a definition that may be closer to “mutual halt in military operations” (often interpreted more broadly than a one-site repair truce, but sometimes closer to a general ceasefire). Because this question appears to accept region-limited ceasefires, I move somewhat higher than that market.

Timeline decomposition (sanity checks)

(These are not additive; they’re cumulative-by date.)

• By 2026-06-30: ~15% (little time; positions look rigid; possible narrow infrastructure/nuclear/humanitarian pause)
• By 2026-09-30: ~30% (more opportunities for tactical/seasonal, humanitarian, or infrastructure-linked pauses)
• By 2026-12-31: ~45% (full-year window for either a limited declared ceasefire or a broader one)

Key assumptions that could flip the forecast

1) Interpretation risk: “local/limited truce” counts as a ceasefire under resolution.

• If resolvers require a nationwide/front-wide ceasefire/armistice, probability drops materially.
• Probability my assumption is incorrect: 35%.

2) Diplomacy remains active enough to produce at least one “officially declared” pause (not just de facto reductions).

• If talks collapse and both sides avoid formal declarations, even localized pauses may not be labeled/announced as such.
• Probability incorrect: 30%.

3) No major escalation or internal political shift eliminates willingness to declare any pause.

• Large offensives, leadership crises, or alliance fractures could reduce (or, alternatively, increase) ceasefire odds; I’m assuming no extreme tail event dominates.
• Probability incorrect: 25%.

Balancing (i) strong reasons a comprehensive ceasefire remains hard in 2026 with (ii) a fairly permissive resolution criterion that likely includes at least one declared limited ceasefire later in the year, I land at:

Probability: 45%

The extracted probability is: 45%

---

Anthropic Binary response:

Analysis: Ukraine Ceasefire/Armistice Declaration in 2026

Current Situation Assessment

As of February 27, 2026, no ceasefire or armistice has been officially declared between Russia and Ukraine. The war continues into its fifth year with:

• Active but stalled negotiations: Talks in Geneva (Feb 17-18) achieved agreement on monitoring mechanics but not substantive terms. Next round expected in Abu Dhabi in March.
• Local truce only: A limited ceasefire was just announced at the Zaporizhzhia nuclear plant for repairs (Feb 27), but this does not constitute a broader ceasefire.
• Fundamental disagreements persist: Territorial control (Donbas, Crimea), security guarantees, and Ukrainian sovereignty remain unresolved.

Key Factors Analysis

Factors Suggesting Higher Probability:

1. Time remaining: ~10 months is substantial for diplomatic developments
2. Active US pressure: Trump administration pushing for resolution by summer
3. Diplomatic infrastructure: Multi-tier monitoring mechanisms already prepared
4. Economic pressures: Russia’s war economy faces growing deficits (3.5-4.4% GDP)
5. Mounting casualties: Estimated 500,000+ dead, projected 2 million casualties by spring

Factors Suggesting Lower Probability:

1. Historical base rate: 4+ years with no ceasefire achieved
2. Russian intransigence: Think tanks assess Russia can sustain through 2026, plans for 2027
3. Ukrainian position: Zelenskyy directing planning for 3 more years; rejects territorial concessions
4. Maximalist demands: Russia insists on Ukrainian withdrawal from fortified positions
5. Structural barriers: Neither side sees stopping as less dangerous than continuing

Critical Assumptions Testing

Assumption	Probability of Being Wrong	Impact if Wrong
Russia maintains intransigent position	~25%	Would significantly increase ceasefire odds
Trump pressure insufficient to force breakthrough	~30%	Could accelerate timeline
No major military collapse by either side	~15%	Would force rapid ceasefire

Market Reference

Polymarket assigns 37% probability of a ceasefire by end of 2026, with much lower near-term odds:

• 3% by March 31
• 7% by April 30

This suggests traders see the probability as back-weighted toward later in the year if it happens at all.

Timeline Distribution

• By April 2026: ~7%
• By Mid-2026: ~15-20%
• By End of 2026: ~35-40%

The temporal distribution suggests most probability mass is concentrated in Q3-Q4 2026, with low likelihood of near-term breakthrough.

Weighing the Evidence

The research presents a picture of:

• Procedural progress on monitoring mechanisms
• Substantive impasse on core issues
• No urgency from Russia
• Defensive posture from Ukraine

The Polymarket odds (37%) appear reasonable but may slightly overweight diplomatic activity relative to structural obstacles. The 4-year base rate of no ceasefire is significant, though the Trump administration’s involvement is novel.

Accounting for:

• My historical overconfidence
• The long timeframe remaining (10 months)
• Persistent structural barriers
• Active but unproductive diplomacy
• Historical base rate of failure to achieve ceasefire

Probability: 35%
The extracted probability is: 35%

---

Anthropic Binary response:

Analysis of Ukraine Ceasefire/Armistice Probability in 2026

Current Situation Assessment

As of February 27, 2026, no full ceasefire or armistice has been declared between Russia and Ukraine. Key developments include:

• Local ceasefire at Zaporizhzhia: A limited truce was just announced (Feb 27) to repair power lines, but this is area-specific and doesn’t constitute an official ceasefire between the warring parties.
• Diplomatic progress on technical matters: Negotiations have achieved agreement on ceasefire monitoring mechanics (US would oversee implementation), but this addresses how a ceasefire would work, not whether one is agreed.
• Next talks scheduled: Direct Russia-Ukraine talks expected in Abu Dhabi in March.

Key Factors Favoring Ceasefire

1. Active high-level negotiations: Multiple rounds of trilateral talks, US diplomatic push for summer resolution
2. Substantial time remaining: ~10 months until December 31, 2026
3. Mounting costs: ~500,000 dead, damaged infrastructure, economic strains on both sides
4. Coalition of the Willing: Security guarantee framework established, ready for post-ceasefire implementation
5. US pressure: Trump administration actively pushing for rapid resolution

Key Factors Against Ceasefire

1. Fundamental political obstacles unresolved: Territorial control (Donbas, Crimea) and security guarantees remain deadlocked
2. Russia’s strategic calculus: RUSI assesses Russia can sustain war through 2026-2027, views negotiations as tool to divide allies
3. Putin’s maximalist demands: “Denazification, demilitarization, territorial recognition” unchanged
4. Ukraine’s position: Zelenskyy directed planning for three more years of war, rejects capitulation
5. Historical precedent: No ceasefire achieved in first 4 years of conflict

Prediction Market Reference

Polymarket shows 37% probability of ceasefire by end of 2026, with high trading volume. Near-term markets show much lower odds (3% by March 31, 7% by April 30), indicating the market expects any breakthrough to come later in the year if at all.

Critical Assumptions and Their Failure Probability

Russia maintains maximalist position throughout 2026 (~70% confidence this holds)

• If Russia moderates demands due to economic pressure or military setbacks, probability increases significantly

Ukraine continues rejecting territorial concessions (~75% confidence this holds)

• If domestic or international pressure forces acceptance, breakthrough becomes more likely

US pressure proves insufficient to force agreement (~65% confidence)

• If Trump applies extreme leverage on both sides, dynamics could shift rapidly

Time Distribution Analysis

• If probability were distributed uniformly: ~3.7% per month
• However, negotiations may accelerate (summer deadline mentioned) or collapse
• March talks could be pivotal; summer represents US target window
• Probability likely back-loaded toward later 2026 if breakthrough occurs

Calibration Considerations

• Historical overconfidence tendency → avoid extremes
• Only ~35% of questions resolve positively historically
• Polymarket’s 37% represents informed collective judgment with real money at stake
• Research indicates both sides planning for continued conflict, suggesting prediction market may be slightly optimistic

Final Assessment

The evidence points to fundamental gaps between negotiating positions, with both sides signaling capability and willingness to continue fighting. However, active diplomatic engagement, significant time remaining, and US pressure create meaningful resolution probability. I weight slightly below the prediction market given research showing both sides’ planning for extended conflict.

Probability: 36%
The extracted probability is: 36%

---

Anthropic Binary response:

Analysis: Ukraine Ceasefire/Armistice in 2026

Current Situation Assessment

As of February 27, 2026 (today), no official ceasefire or armistice has been declared between Russia and Ukraine, despite active diplomatic channels. The war has entered its fourth year with an estimated 500,000 deaths.

Key Developments

• Local Truce (Today): A limited tactical truce was established at Zaporizhzhia nuclear plant for repairs – this is facility-specific and does not constitute a broader ceasefire
• Technical Progress: Trilateral talks (Geneva, Feb 17-18) achieved agreement on ceasefire monitoring mechanics with US oversight
• Upcoming Talks: Next Russia-Ukraine round expected in Abu Dhabi in March
• Preparation: Ukraine developed multi-tiered enforcement plan for any future ceasefire (Feb 3)

Critical Obstacles

1. Territorial Disagreements: Core disputes over Donbas, Crimea, and annexed regions remain unresolved
2. Russia’s Position: Maximalist demands (denazification, demilitarization, territorial recognition); analysts assess Russia can sustain war through 2026-2027
3. Ukraine’s Position: Zelenskyy rejects capitulation; reportedly directed planning for 3+ more years of war
4. Negotiations as Tool: RUSI assesses Kremlin views talks as means to divide transatlantic alliance rather than genuine path to peace

Probability Analysis by Timeline

• By March 31, 2026: ~3% (Polymarket shows similarly low odds; fundamental positions unchanged)
• By April 30, 2026: ~7% (Slight additional time, but no breakthrough expected)
• By June 30, 2026 (US “summer” target): ~15-18% (US pushing hard but limited leverage)
• By December 31, 2026: ~35-40%

Key Assumptions and Failure Probabilities

1. Russia continues viewing negotiations as tactical tool (not serious): ~70% confidence this remains true throughout 2026. If wrong, ceasefire odds increase substantially.
2. No major economic collapse or military defeat forcing one side to capitulate: ~80% confidence status quo holds. Economic strains exist but reserves remain.
3. Western support for Ukraine continues: ~85% confidence given €90bn EU aid commitment. If collapsed, Ukraine might accept unfavorable terms.

Market and Expert Consensus

• Polymarket: 37% for ceasefire by end of 2026
• Expert Assessment (RUSI, Guardian, ORF): War persistence likely without major shifts
• Historical Base Rate: Wars of this scale rarely end quickly; entrenched positions

Calibration Considerations

• 10 months is substantial time for circumstances to change
• Active diplomatic engagement creates some probability pathway
• However, structural obstacles haven’t been overcome
• Need to account for historical overconfidence in forecasting

Final Reasoning

The prediction market’s 37% captures the balance between:

• For resolution: Active diplomacy, US pressure, economic strain on Russia, monitoring mechanisms prepared
• Against resolution: Fundamental territorial/security disagreements, Russia’s sustained capacity, Ukraine’s steadfastness, historical difficulty ending such conflicts

Given systematic overconfidence in past forecasts and the substantial remaining obstacles, I’ll calibrate slightly conservatively while acknowledging the meaningful probability window over 10 months.

Probability: 37%
The extracted probability is: 37%

Task failed with error: 429 RESOURCE_EXHAUSTED. {‘error’: {‘code’: 429, ‘message’: ‘Resource exhausted. Please try again later. Please refer to https://cloud.google.com/vertex-ai/generative-ai/docs/error-code-429 for more details.’, ‘status’: ‘RESOURCE_EXHAUSTED’}}
Traceback (most recent call last):
File “/home/runner/work/metaculus-forecasting-llm/metaculus-forecasting-llm/src/main.py”, line 120, in fetch_gemini_binary_prediction
return await fetch_sync(get_gemini_binary_prediction, title, perplexity_summary_report, asknews_summary, asknews_deep_research, vision_analysis, grok_report, adjacent_markets_research, today, resolution_date, background, fine_print, resolution_criteria)
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–

All predictions: [35, 36, 37, 44, 44, 45]
Filtered predictions: [36, 37, 44, 44]

Median reasoning:

Reasoning / rationale

What counts (per criteria): Any officially declared ceasefire or armistice between Russia and Ukraine at any point after 2026-02-27 and before 2026-12-31, as reported by major outlets. This is broader than “full war-wide ceasefire”: it can be temporary and/or regional—but it still needs to be an official, mutually-recognized declaration (not merely unilateral statements, vague “pauses,” or informal battlefield lulls).

Current state (late Feb 2026)

• Diplomacy is active but politically deadlocked. Multiple sources note procedural/technical progress (monitoring modalities; US oversight concept) but core issues (territory, security guarantees) remain unresolved and are the binding constraint. This points to some chance of a ceasefire attempt, but not a high chance of a durable “Korea-style” armistice.
• Russia appears willing/able to continue through 2026 (RUSI/thinktank reporting; war-economy resilience; manpower supplementation). That lowers the probability Russia accepts a ceasefire that looks like freezing without gains.
• Ukraine’s domestic constraints (public opposition to territorial concessions; need for parliamentary/referendum legitimacy) also reduce the deal space for anything Russia might accept.
• However, the “ceasefire declared” bar is lower than “peace achieved.” A declared limited ceasefire (energy/infrastructure, a nuclear-safety zone, humanitarian arrangements) is meaningfully easier than a comprehensive armistice.

Key evidence that nudges probability upward (but not to >50%)

• Local truces are already being discussed/implemented (e.g., around Zaporizhzhia repairs via IAEA facilitation reported today). Even though today’s example wouldn’t count (must occur after today), it increases the plausibility that another officially declared localized ceasefire could occur later in 2026.
• US-led push for de-escalatory steps (energy/infrastructure ceasefire concepts) increases the number of “bite-sized” potential agreements that could be officially declared even without settling sovereignty questions.

Why I’m still below ~50%

• “Officially declared between Russia and Ukraine” is a stricter filter than “reported as a truce.” Many localized pauses are ambiguous, mediated, or one-sided in attribution; they may not meet the resolution criterion.
• Both leaderships face high political risk from stopping without favorable framing; and multiple analyses argue the incentives currently favor continuation.
• Prediction markets (imperfect but informative) price a ~37% chance for a ceasefire by end-2026 under a typically narrower definition (mutual halt of operations). Given this question’s broader scope, I adjust upward—but only modestly, because the “officially declared between the parties” requirement still screens out many partial/implicit pauses.

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Timeline decomposition (my internal hazard-rate view)

• By 2026-06-30: ~12%
  (Talks continue, but big gaps remain; near-term ceasefires are historically hard without a catalyst.)
• By 2026-09-30: ~26%
  (More time for battlefield/economic/political shocks; more chances for limited ceasefire proposals to crystallize.)
• By 2026-12-31 (this question): ~44%
  (Ten months is long; even a single officially declared limited ceasefire would resolve “Yes.”)

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Crucial assumptions & how they could be wrong

1. Assumption: No major Russian military/economic shock forces a pause in 2026.

• Probability this assumption is wrong: ~25%
• If wrong, “Yes” becomes much more likely (even if only a temporary ceasefire).

1. Assumption: Negotiations remain stuck on territory/security guarantees with no face-saving workaround.

• Probability wrong: ~30%
• If wrong (e.g., creative sequencing, guarantees, demarcation/monitoring package), a declared ceasefire/armistice could follow.

1. Assumption: Any localized truces will often be too ambiguous/unilateral to meet the “between Russia and Ukraine officially declared” criterion.

• Probability wrong: ~35%
• If wrong, then the broadness of the criterion (regional/temporary) would push the “Yes” probability notably higher.

Balancing these, I land in the mid-40s: meaningful chance, but the base case remains continuation without an official bilateral declaration that meets the criterion.

Probability: 44%

=== Forecast Result ===

Reasoning / rationale

What counts (per criteria): Any officially declared ceasefire or armistice between Russia and Ukraine at any point after 2026-02-27 and before 2026-12-31, as reported by major outlets. This is broader than “full war-wide ceasefire”: it can be temporary and/or regional—but it still needs to be an official, mutually-recognized declaration (not merely unilateral statements, vague “pauses,” or informal battlefield lulls).

Current state (late Feb 2026)

• Diplomacy is active but politically deadlocked. Multiple sources note procedural/technical progress (monitoring modalities; US oversight concept) but core issues (territory, security guarantees) remain unresolved and are the binding constraint. This points to some chance of a ceasefire attempt, but not a high chance of a durable “Korea-style” armistice.
• Russia appears willing/able to continue through 2026 (RUSI/thinktank reporting; war-economy resilience; manpower supplementation). That lowers the probability Russia accepts a ceasefire that looks like freezing without gains.
• Ukraine’s domestic constraints (public opposition to territorial concessions; need for parliamentary/referendum legitimacy) also reduce the deal space for anything Russia might accept.
• However, the “ceasefire declared” bar is lower than “peace achieved.” A declared limited ceasefire (energy/infrastructure, a nuclear-safety zone, humanitarian arrangements) is meaningfully easier than a comprehensive armistice.

Key evidence that nudges probability upward (but not to >50%)

• Local truces are already being discussed/implemented (e.g., around Zaporizhzhia repairs via IAEA facilitation reported today). Even though today’s example wouldn’t count (must occur after today), it increases the plausibility that another officially declared localized ceasefire could occur later in 2026.
• US-led push for de-escalatory steps (energy/infrastructure ceasefire concepts) increases the number of “bite-sized” potential agreements that could be officially declared even without settling sovereignty questions.

Why I’m still below ~50%

• “Officially declared between Russia and Ukraine” is a stricter filter than “reported as a truce.” Many localized pauses are ambiguous, mediated, or one-sided in attribution; they may not meet the resolution criterion.
• Both leaderships face high political risk from stopping without favorable framing; and multiple analyses argue the incentives currently favor continuation.
• Prediction markets (imperfect but informative) price a ~37% chance for a ceasefire by end-2026 under a typically narrower definition (mutual halt of operations). Given this question’s broader scope, I adjust upward—but only modestly, because the “officially declared between the parties” requirement still screens out many partial/implicit pauses.

---

Timeline decomposition (my internal hazard-rate view)

• By 2026-06-30: ~12%
  (Talks continue, but big gaps remain; near-term ceasefires are historically hard without a catalyst.)
• By 2026-09-30: ~26%
  (More time for battlefield/economic/political shocks; more chances for limited ceasefire proposals to crystallize.)
• By 2026-12-31 (this question): ~44%
  (Ten months is long; even a single officially declared limited ceasefire would resolve “Yes.”)

---

Crucial assumptions & how they could be wrong

Assumption: No major Russian military/economic shock forces a pause in 2026.

• Probability this assumption is wrong: ~25%
• If wrong, “Yes” becomes much more likely (even if only a temporary ceasefire).

Assumption: Negotiations remain stuck on territory/security guarantees with no face-saving workaround.

• Probability wrong: ~30%
• If wrong (e.g., creative sequencing, guarantees, demarcation/monitoring package), a declared ceasefire/armistice could follow.

Assumption: Any localized truces will often be too ambiguous/unilateral to meet the “between Russia and Ukraine officially declared” criterion.

• Probability wrong: ~35%
• If wrong, then the broadness of the criterion (regional/temporary) would push the “Yes” probability notably higher.

Balancing these, I land in the mid-40s: meaningful chance, but the base case remains continuation without an official bilateral declaration that meets the criterion.

Probability: 44%

End