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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 xhigh · 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 Sonnet 5.5
anthropic/claude-sonnet-5-5
52.1%
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