Benchmark

Epoch Capabilities Index

Epoch AI · source page ↗ · last checked Jul 5, 2026, 6:02 PM

Current leaderboard

captured Jul 5, 2026, 6:02 PM
ModelEpoch Capabilities Index (ECI)
gpt-5.5-pro_xhigh161.01
gpt-5.5-pro-pre-release_xhigh161.01
gpt-5.5-pro-pre-release_high161.01
gpt-5.5-pro_high161.01
gpt-5.5-pro_unknown161.01
claude-fable-5_max160.75
claude-fable-5_xhigh160.75
claude-fable-5_high160.75
claude-fable-5_unknown160.75
claude-fable-5160.75
gpt-5.5_xhigh158.523
gpt-5.5_low158.523
gpt-5.5-pre-release_xhigh158.523
gpt-5.5_high158.523
gpt-5.5_medium158.523
gpt-5.5_unknown158.523
gpt-5.5_none158.523
claude-opus-4-8_max158.08
claude-opus-4-8_high158.08
claude-opus-4-8_medium158.08
claude-opus-4-8_low158.08
claude-opus-4-8_xhigh158.08
claude-opus-4-8_unknown158.08
claude-opus-4-8_none158.08
gpt-5.4-pro-2026-03-05_xhigh158.001

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