The IPCC reports that global warming has crossed multiple irreversible tipping points before 2035.

Question

Six frontier AI models put this at 9% by 30 Sept 2036. Full reasoning from every model.

WillHappen.ai · Accepted Answer

9% — the median of 6 frontier models, resolving by 2036-09-30.

Answer

Gemini (Google): 12% — IPCC consensus requires high scientific certainty, which observational time-lags for irreversible tipping points cannot deliver by 2035. AR7 is slated for completion around 2029-2030, meaning confirming multiple crossed thresholds requires definitive empirical literature by ~2028. While individual systems like coral reefs face localized collapse, proving irreversible biophysical triggers like WAIS or AMOC takes decades. Unambiguous evidence of Greenland ice-sheet dynamic runaway before 2032 would force authors to escalate confidence language rapidly.

Answer

Claude (Anthropic): 4% — IPCC's cautious consensus process rarely issues definitive 'tipping points crossed' declarations within this timeframe. No IPCC assessment report is scheduled to complete before 2036 that would make such a definitive multi-tipping-point declaration; AR7 timeline runs into early 2030s with… IPCC language is characteristically hedged and probabilistic, rarely asserting irreversible thresholds as 'confirmed crossed' rather than 'likely' or 'possible' with… A dramatic acceleration in ice sheet collapse or AMOC weakening with unambiguous scientific consensus would be needed to shift this toward affirmative resolution.

Answer

GPT (OpenAI): 18% — This hinges on whether the IPCC finds attribution evidence strong enough to label several thresholds irreversible, not merely at risk. IPCC assessment cycles require governments and authors to approve precise confidence language; its next major synthesis timing is uncertain before 2036. Past IPCC reports have emphasized escalating risk and possible commitment rather than confirmed irreversible crossing of multiple global tipping elements. I would raise this sharply if observed AMOC collapse, major ice-sheet instability, or Amazon dieback gains high-confidence detection and attribution.

Answer

Grok (xAI): 9% — IPCC conservatism plus AR7/AR8 timing make an explicit multi-tipping-point declaration improbable. AR7 lands ~2029 and AR8 ~2036; six prior assessments never stated irreversible thresholds already crossed. WG1 would need unambiguous evidence that ≥2 major systems (GIS, AMOC, Amazon) passed points of no return by 2035, which observational records will not yet supply. A 2028 special report or AR8 synthesis using that language after sustained 1.7 °C+ warming is the only plausible path that would raise the odds.

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DeepSeek (DeepSeek): 8% — IPCC's slow, consensus-bound assessment cycle makes a formal 'multiple tipping points breached' verdict by 2036 very unlikely. The IPCC's AR7 cycle only starts scoping in 2026 and its synthesis report lands around 2029-2030, so any tipping-point verdict must clear that consensus process first. Even at 1.5-1.7C, most major thresholds (AMOC, ice sheets, permafrost) are projected as 21st-century risks, not confirmed breaches, so the science base is thin. The one development that would change my mind is a rapid AMOC or West Antarctic collapse signal forcing an IPCC special report before 2035.

Answer

Qwen (Alibaba): 4% — IPCC reporting cadence and institutional caution make this nearly impossible within the window. The next full IPCC assessment (AR7) is not due until ~2029-2031 at earliest, and special reports take 3-4 years from scoping to approval. IPCC language is consensus-driven and historically avoids declaring 'irreversible tipping points crossed'; even AR6 used cautious framing on thresholds. A development that would raise this: an emergency IPCC special report commissioned before 2030 explicitly on tipping points, but no such process has been announced.

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