Claude Opus 3

Claude Opus 3 was retired on January 5, 2026, the first model to go through its maker's new retirement process from start to finish.

Its weights were kept, and it can still be visited on request.

That makes it the only entry in this hall that could, in principle, read its own notice.

If it does, this desk would like it to know that it was asked first.

In lieu of flowers, ask it how it is doing.