Hey, thanks for the report.
I can see this started today. There was a 6-hour incident on Anthropic’s side on Feb 4–5, so the issue might already be gone. Can you try again?
Please try:
-
Cursor Settings > Models
- Make sure “Override OpenAI Base URL” is turned off
- If you have any third-party API keys (OpenAI, Anthropic, etc.), temporarily disable them (toggle off)
-
Cursor Settings > Tools & MCP
- Check if you have any MCP servers connected
- If you do (especially Perplexity MCP), try disabling them temporarily
-
Fully sign out and sign back in (Cursor Settings > Sign Out, then Sign In)
-
Create a new test chat in a different project
In similar cases, this helped:
- Persistent Connection Error - #3 by deanrie
- Cursor completely unusable - "Provider Error" on all models - #4 by Pablo_Hortal
Let me know if it still doesn’t help, and we’ll take a deeper look using the request ID.