deepseek v4 provider error: The reasoning_content in the thinking mode must be passed back to the API #24497

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1. mstrYoda

   added

   bugSomething isn't workingSomething isn't working

   on Apr 26, 2026
2. github-actions

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   rekram1-node

   on Apr 26, 2026
3. github-actions

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   coreAnything pertaining to core functionality of the application (opencode server stuff)Anything pertaining to core functionality of the application (opencode server stuff)

   on Apr 26, 2026
4. github-actions commented on Apr 26, 2026

   

   github-actionsBot

   on Apr 26, 2026 – with GitHub Actions

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   This issue might be a duplicate of existing issues. Please check:

   • DeepSeek V4 400: The reasoning_content in the thinking mode must be passed back to the API. #24385: Same error — DeepSeek V4 reasoning_content in thinking mode must be passed back to the API
   • Error from provider (DeepSeek): The reasoning_content in the thinking mode must be passed back to the API. #24334: Same error message from DeepSeek provider
   • DeepSeek V4: reasoning_content lost on second interleaved pass (regression from #24146) #24442: DeepSeek V4 reasoning_content lost on second interleaved pass (regression)

   If your issue is distinct from these, please add context explaining what's different. Otherwise, consider adding a reaction or comment to an existing issue so maintainers can better track impact.

   👍React with 👍1Reacted by Emre Savcı
5. mstrYoda

   closed this as completedon Apr 26, 2026