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AI Intelligence · Anthropic

Claude Opus 5

Closed

Anthropic announced Claude Opus 5 on 2026-07-24 and reported Claude API access the same day. The evaluated checkpoint in later comparisons and current availability are unknown.

Benchmark scores

  • Terminal-Bench 4.0 · Reported by the model's maker, Sep 22, 202652.3%#3 of 5 results
  • CursorBench 4.0 · Reported by the model's maker, Sep 22, 2026Setting: Max effort; numeric reasoning and token budgets are not specified.46.6%#3 of 4 results
  • Humanity's Last Exam · Reported by the model's maker, Sep 22, 202663.6%#3 of 4 results

Access

Anthropic reported same-day Claude API access under claude-opus-5 on 2026-07-24. Current access, retirement and the checkpoint used in later evaluations are unknown; a formal general-availability date is not established.