Jeremy: Will a ceasefire or armistice be declared in Ukraine in 2026?

Obtaining outside data.
Checking internet sources, using keywords: Ukraine ceasefire armistice 2026
News from various sources:

The web content includes information about a recent ceasefire in Ukraine, particularly in the Kherson region, following the ongoing conflict with Russia. Here’s a summary of the relevant details:

Ceasefire Announcement: Melania Trump, the First Lady of the United States, announced the commencement of a localized ceasefire between Russia and Ukraine in the Kherson region. This truce began at 4 am Moscow time on October 27, 2026, two days ahead of the original schedule. The purpose of the ceasefire is to protect civilians and facilitate humanitarian aid.
Ceasefire Expansion: The ceasefire extends beyond the Russian-controlled town of Oleshky to provide safe passage for humanitarian convoys.
Criticism and Context: José Andrés, founder of World Central Kitchen, criticized Melania Trump’s celebration of the ceasefire, emphasizing that while it may provide safety on paper, evacuees are being moved to Russian-held territories rather than Ukrainian-controlled ones. He highlighted ongoing violence, including a Russian drone strike in Dnipro that killed 14, and attacks in Chernihiv and Kremenchuk, which resulted in additional civilian casualties and injuries. (Carolyn‘s note: As I write this, the Ukrainian delegation, accompanied by evacuated residents of Oleshky, was heading to Anapa, in Russian-held territory on the shore of the Azov Sea. From there, they were expected to fly to Belarus before continuing home by bus. Source: https://www.kyivpost.com/post/88634)
Humanitarian Efforts: Despite the ceasefire, Russian forces continue to carry out strikes across different regions in Ukraine, increasing the plight of civilians. Andrés called for international efforts to protect civilians, particularly women, children, and the elderly, from the ongoing conflict.
Broader Implications: While Melania Trump and her team have hailed the Oleshky ceasefire as a potential first step towards lasting peace, Andrés and others emphasize that much more needs to be done to achieve a comprehensive and effective ceasefire and ensure real safety for civilians throughout Ukraine.

This content provides an overview of the ceasefire and the challenges and criticisms associated with its implementation amid ongoing conflicts in Ukraine.

Fact-checked summary:
Based on the available verified information, as of October 2023, there are ongoing reports of violence in Ukraine, with Russian forces continuing strikes that affect civilians, despite calls for international protection efforts. This ongoing violence poses challenges to achieving and enforcing any ceasefire, which is relevant to discussions about the potential for a ceasefire or armistice in Ukraine in the future, such as in 2026. This reflects the difficulties and complexities in maintaining peace, emphasizing the importance and hurdles of establishing an enforced ceasefire.

OpenAI gives a base rate of 20%

The question difficulty is rated 8 (0 to 10)

Historical weighted factors include:
Previous attempts at ceasefires in conflict zones, 0.3
International diplomatic interventions in conflicts, 0.2
Regional power dynamics and military presence, 0.3
Duration of ongoing conflicts before resolution, 0.2

A Bayesian calculation could be performed as follows:
Using historical factors and current events, the probability of a ceasefire is adjusted. Starting with a base rate of 0.2, consider the likelihood of each necessary event and historical factors. Historical success in similar situations (~30% success) gives a Bayesian probability of approximately 0.15.

Bayesian base rate: 15%

Sufficient news to provide a good forecast? 1 (0 or 1)

News is relevant, topical and unbiased? 1 (0 or 1)

Question classification: scenario_based_forecast

Expected time (days) until question close: 180

The following were considered in order to produce this base rate:
The base rate considers the similarity of ongoing conflicts where ceasefires have occurred. Previous ceasefire attempts and international involvement provide a starting point, adjusted for ongoing violence and recent international efforts.

Ideally, the news feed would contain the following sorts of information for a better forecast:
Ideally, more detailed information on ongoing diplomatic efforts and insights into the domestic political landscapes of the involved countries would enhance the forecast.

Some potential divergent considerations that might affect the base rate:
Recent escalations by Russian forces and limited progress in peace talks suggest a lower likelihood than typical. Growing geopolitical tensions and lack of strong enforcement mechanisms are major deterrents.

The following chain of events are necessary for the question to resolve positively:

Ceasefire negotiations initiated between Ukraine and Russia with international mediation. Unlikely
Significant reduction in hostilities and violence by Russian forces in Ukraine. Unlikely
International enforcement mechanisms put in place to ensure compliance. Uncertain

Querying Claude (AI predicts: 0.22 – confidence: 4)
Querying OpenAI (AI predicts: 0.25 – confidence: 4)

Explanations of the measures below: Guide to Jeremy Lichtman’s Multi-AI Oracle Reports
Question Type: Binary
Median from LLMs: 0.24
Base rate: 0.2 (from OpenAI)
SD: 0.02
MAPD: 0
Confidence: 4
Conf Mode: Low
Mellers: 0.15
Reverse Mellers: 0.32
Theory of Mind: 0.34 (What did the LLMs think other LLMs predicted?)
Beta Distribution: 0.01
Close Type: A (B = cautious # closer to 50%; A/C = closer to extremes)
LLM responses: 2

Model value: 24%

Considering the scenario where a ceasefire in Ukraine could be declared by the end of 2026, multiple AI analyses point to a low probability largely due to ongoing hostilities, fragmentary peace negotiations, and stalled international enforcement mechanisms. Although historical precedents set the base rate of achieving ceasefires in protracted conflicts at 0.2, the context of late 2026 presents marginally higher uncertainty due to the potential for unexpected geopolitical developments. The Trump administration’s unpredictable nature and inclination toward unconventional diplomatic measures, coupled with possibilities of battlefield exhaustion or internal pressures within Russia or Ukraine, create a non-zero chance of an eleventh-hour surprise ceasefire. Nevertheless, the currently observable lack of progress in negotiations and the persistence of military actions suggest that the likelihood remains constrained by limited time and substantial challenges.

Runtime: 102 seconds.