I also had Claude with anthropic api key in some kind of messy state and not working.
What I did:
- Removed claude models by clicking the delete icon
- Toggled Anthropic api key off and then on => models got added back there
- (perhaps optional) For some reason I did not get these working before resetting my custom OpenAI base uri to default. Weirdly got OpenAI server error even if the selected model was from Anthropic.