Model results

FrontierCode

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Atlas snapshot captured 10/19/2026, 10:20:28 AM UTC. This is an import timestamp, not the evaluation date. Coverage may be incomplete.

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FrontierCode

Source: Cognition via Epoch AI
Version: Not reported
Measurement date: Not reported
Metric: % · Higher is better
Evaluation scope: Harness claude-code · Aggregation Mean@5 · effort medium · result date not supplied

Positions are withheld because at least one result lacks explicit independent provenance or a documented evaluation scope. Missing metadata is shown as unreported; matching imported metadata is not independent verification of the protocol.

Claude Opus 5.5
anthropic/claude-opus-5-5
54.6%
View modelEvidence aggregated
Claude Fable 5.1
anthropic/claude-fable-5-1
50.9%
View modelEvidence aggregated