Source Intelligence
Follow Discord

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 v2.1.219 Home All releases ←olderv2.1.218 v2.1.220newer→
Claude Code v2.1.219

opus5 in the local model listing

Under the hood
Useful2 Signal0
Models not in their notes

The local model listing endpoint now includes Opus 5 among its available keys.

opus5
What

Opus 5 now appears in the model enumeration served by the built-in SDK/proxy model-listing endpoint.

Details
  • The list of model keys now includes "opus5" alongside "opus48" and "fable5".
Evidence

"opus5"

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 v2.1.219 →