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Correct Claude Opus 5's release date to 2026-07-24 - #134

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opus5-release-date
Jul 24, 2026
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Correct Claude Opus 5's release date to 2026-07-24#134
MaxGhenis merged 1 commit into
mainfrom
opus5-release-date

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Summary

  • Opus 5 was announced and made available 2026-07-24 (Fortune, Bloomberg, 9to5Google), not 07-23 — this was a same-day scoring.
  • Date corrected in paper_results.MODEL_RELEASE_DATES and modelMeta.MODEL_RELEASE_DATES (leaderboard Released column).
  • Lag subsection recomputes byte-identical (128 days / 7 days); rendered hashes re-pinned; arXiv bundle rebuilt.

Verification

  • Full suite passes; PDF contains no 2026-07-23 and lag strings unchanged.

🤖 Generated with Claude Code

The model was announced and made available 2026-07-24 (Fortune,
Bloomberg, and 9to5Google all date it so), not 2026-07-23 as first
recorded — making this a same-day scoring, not day-after. The date
moves in the paper's release table and the leaderboard's Released
column; the open-weight lag subsection recomputes byte-identical since
Opus 5 is closed and scores below Kimi K3, and rendered-asset hashes
are re-pinned.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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@MaxGhenis
MaxGhenis merged commit da2a733 into main Jul 24, 2026
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MaxGhenis deleted the opus5-release-date branch July 24, 2026 20:53
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