I'm also affected. I installed and updated Xcode via the Mac App Store. The additional model providers are cleared each time I close Xcode.
Xcode 26.2
Tahoe 26.2
This BTW made me lose the entire conversation history with the third-party model provider (which was Anthropic, via API key): is there a way to restore those conversations?
Topic:
Developer Tools & Services
SubTopic:
Xcode
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