Multiple major Earth system tipping points become irreversible before 2035.

Question

Six frontier AI models put this at 16% by 13 Sept 2036. Full reasoning from every model.

WillHappen.ai · Accepted Answer

16% — the median of 6 frontier models, resolving by 2036-09-13.

Answer

Gemini (Google): 14% — Proving formal irreversibility requires scientific consensus that hysteresis thresholds have been crossed, which IPCC processes rarely grant quickly. While warm-water coral loss may cross thresholds near 1.5C, showing West Antarctic or Greenland ice loss is irreversible by 2035 lacks consensus. Detection and attribution of tipping points face multi-decade observational lags, leaving high scientific uncertainty through 2035. A formal IPCC AR7 or AR8 synthesis declaring two distinct systems irreversibly committed would immediately reverse this assessment.

Answer

Claude (Anthropic): 3% — Scientific consensus on irreversibility for multiple tipping points by 2036 is far too slow and uncertain to form. Detecting irreversibility requires decades of observational confirmation; IPCC-style consensus statements move cautiously and rarely declare thresholds crossed… Current science (AR6, tipping point papers) flags risk and possible early-stage destabilization (e.g. Greenland, AMOC weakening, coral bleaching) but stops short of… A dramatic acceleration in ice sheet collapse or AMOC shutdown with unambiguous evidence before 2036 would flip this, but no such signal is currently near…

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GPT (OpenAI): 61% — It turns on whether observed warming and feedbacks establish lock-in, not merely severe damage, across more than one system. Several systems are already near thresholds: warm-water reefs face repeated bleaching, and Greenland and West Antarctica show accelerating mass loss. A 2035 crossing near or above 1.5°C is plausible, but irreversibility requires attribution and consensus that could lag physical commitment. I would raise this sharply if sustained 2027–2032 warming triggers widespread reef collapse plus new evidence of marine ice-sheet instability.

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Grok (xAI): 18% — Consensus that ≥2 major systems have passed irreversible thresholds by 2035. IPCC AR7 (~2029) plus later assessments must declare commitment; 9 years extra warming is too brief for ice-sheet or AMOC lock-in to be confirmed. Zero such consensus declarations exist to date; this case sits below that base rate because observational detection lags physical commitment by decades. A documented AMOC collapse or Amazon dieback 2027-32 would raise the odds most.

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DeepSeek (DeepSeek): 22% — This turns on whether scientists can agree that self-reinforcing feedbacks are already locked in, not on whether warming continues. IPCC AR6 (2021-23) treats most tipping elements as low-probability before 2100, with only coral reefs and some permafrost at risk near 1.5-2°C. The 2024-25 coral bleaching event hit 84% of reefs, but scientists still call recovery possible, so 'irreversible' consensus is not there. A formal IPCC special report or a major ice-sheet collapse paper before 2035 would be the development that most shifts this.

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Qwen (Alibaba): 12% — Requires formal scientific consensus on irreversibility of multiple tipping points, not just their occurrence—consensus lags evidence by years. Armstrong et al. 2022 and subsequent work identify ~16 potential tipping elements, but declaring any 'irreversible' requires sustained observational confirmation plus… By 2036, global mean warming will likely be ~1.4-1.6°C; coral reef die-off and West Antarctic ice sheet instability may be underway, but 'irreversible' is a much… The resolution criterion demands consensus on multiple points simultaneously; even if one or two systems show strong evidence (e.g., AMOC slowdown, Greenland ice loss)…

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