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FrontierBench v0.1
We haven't written a description for this benchmark yet; see the card notes below for how each maker ran it.
How each maker reported it
- Claude Opus 5 Table 8.1.A, p.148–149
Claude Opus 5 results use adaptive thinking at max effort, averaged over five trials (ARC-AGI-3 at high effort). GPT-5.6 Sol's FrontierBench figure uses Codex and its ARC-AGI-1 figure is at xhigh. The Fable 5 HealthBench Professional figure carries a footnote reading "Mythos 5". Competitor figures come from the developers' own published results or leaderboards.
Only each model's own maker's number is shown; scores a maker reports for rival models are left out.