Leaders at COP31 in Türkiye reach an agreement on new climate-action measures.

Question

Six frontier AI models put this at 85% by 15 Jan 2027. Full reasoning from every model.

WillHappen.ai · Accepted Answer

85% — the median of 6 frontier models, resolving by 2027-01-15.

Answer

Gemini (Google): 88% — UN climate summits routinely yield negotiated consensus texts, even if watered down to satisfy divergent national interests. Every COP since COP15 in 2009 has concluded with a formal cover decision or negotiated pact agreed by consensus of all parties. Drafting compromise language on mitigation, adaptation, or finance is the standard mechanism to avert catastrophic diplomatic failure. A walkout by major petrostates or developing coalitions over financing baseline text is the only realistic failure mode.

Answer

Claude (Anthropic): 78% — COPs almost always end with a consensus text, even if watered down—the question is strength, not existence. Every COP since 1995 has produced some form of final agreement or decision text, even contentious ones like COP15 Copenhagen and COP29 Baku. Türkiye as host has strong incentive to broker a face-saving consensus outcome to avoid being seen as a failed presidency. Main risk is COP31 location itself still being contested/negotiated, but resolution window extends to mid-Jan 2027 giving buffer for a late deal.

Answer

GPT (OpenAI): 74% — This hinges on whether Türkiye can broker consensus around a modest package rather than binding new emissions targets. COPs usually end with a negotiated decision: COP28 and COP29 both produced consensus texts despite major disputes. Nearly 200 parties must accept the package in November; fossil-fuel finance and mitigation language are the likely blockers. Odds would fall sharply if a major bloc rejects the draft in the final plenary, as happened at Copenhagen in 2009.

Answer

Grok (xAI): 82% — COP31 producing any consensus outcome text with extra mitigation, finance or NDC language. UNFCCC and the Turkish presidency always table a cover decision; total collapse has occurred only once (Copenhagen 2009). Parties must close by late November 2026; host prestige plus post-Paris precedent of weak-but-present texts keep the bar low. A US–China–OPEC walkout or explicit no-decision would drop this sharply; otherwise the base rate of ~85 % since 2015 holds.

Answer

DeepSeek (DeepSeek): 88% — COP31 will almost certainly adopt a formal outcome text, but 'new measures' hinges on how binding the language is. Every COP since 1995 has closed with an agreed decision text, so the base rate for 'some agreement' is near-certain. Türkiye's presidency has signaled a focus on implementation and adaptation finance, which are the easiest consensus items to land. The real risk is a G77-vs-developed split over loss-and-damage funding, which could push talks into overtime past the Jan 15 deadline.

Answer

Qwen (Alibaba): 89% — Every COP since 1995 has produced an outcome document; total collapse without any agreement text is unprecedented. All 30 prior COPs produced consensus decision texts, even widely criticized ones like Copenhagen 2009; the bar is 'some agreement,' not 'ambitious agreement.' Even if the US under Trump participates minimally or obstructs, the G77+China and EU blocs can still produce a watered-down consensus text, as happened at COP28 and… A complete breakdown would require multiple major blocs simultaneously walking out over an irreconcilable issue—possible but no precedent exists for this in UNFCCC…

Leaders at COP31 in Türkiye reach an agreement on new climate-action measures.

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