FrontierCode shows Claude Opus 5 peaking at medium effort, not max compute
philhchen · x · 2026-07-25
- The chart compares Claude Opus 5, Claude Opus 4.8, Claude Fable 5, and GPT-5.6 Sol on FrontierCode v1.1.
- It shows test-time compute scaling across five reasoning-effort settings, with both main-set and extended-set scores.
- On the main set, Claude Opus 5 reaches its best score of 53.4 at medium effort.
- On the extended set, it peaks at 63.6 also at medium effort, while higher effort does not keep improving monotonically.
Related event: Anthropic Releases Claude Opus 5: SOTA Performance at Half the Price(128 posts)→
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