Epoch AI adds ECI scores, projects Gemini 3 Pro time horizon at 4.9 hours
CFGeek · x · 2026-11-09
Epoch AI added ECI scores for Gemini 3 Pro, Opus 4.5, and GPT-5.2 and used them to predict METR time horizons: Gemini 3 Pro at 4.9h, GPT-5.2 at 3.5h, Opus 4.5 at 2.6h. CFGeek notes that linear ECI gains are misleading — each point multiplies success odds across benchmarks, and historically each 5-point ECI increase roughly doubled time horizon.
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