Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.0.51

Model Detection Extended

The model detection functions now correctly recognize Opus 4.5 model IDs.

  • claude-opus-4-5 pattern now properly identified
  • Fixes potential issues with model-specific features not activating for Opus 4.5
  • Evidence: Detection at KAB() line 163004, Pw() line 224165

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.0.51 →