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.

All of v2.1.200 Home All releases olderv2.1.199 v2.1.201newer

Model ID Error Messages Now Suggest Alternatives

When an unrecognized model ID is passed (e.g., via /model or --model), the error message now:

  • Checks if the input looks like a display name and suggests the correct model ID
  • Uses fuzzy matching to find the closest valid model ID if available
  • Falls back to "Run /model to see available models." when no good match is found

Example output: Model "claude4" is not a recognized model id. Did you mean 'claude-opus-4-5'?

Evidence

Model ID validator (search for "is not a recognized model id.", "Run /model to see available models.")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

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 v2.1.200 →