Where does the bug appear (feature/product)? Cursor IDE Describe the Bug deepseek v4 error report Provider returned error: {“error”:{“message”:“The reasoning_content in the thinking mode must be passed back to the API.”,“type”:“invalid_request_error”,“param”:null,“code”:“invalid_request_error”}} R…

Hey, this is a known limitation for BYOK with DeepSeek V4 and Kimi in thinking mode. Cursor currently doesn’t pass reasoning_content back in a multi-turn flow with tool calls, so the provider rejects the follow-up request. One tool call usually works, and the second step fails with the same 400. Me…

Deepseek-v4-pro error report

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Deepseek-v4-pro error report

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