Deepseek v4 - "The reasoning_content in the thinking mode must be passed back to the API."

[zeka_cardoso]

The reasoning_content in the thinking mode must be passed back to the API.

I’ve created a community node that solves this on Deepseek v4 models.

The description is in Portuguese (Brazil), but the fix is simple: just select “no reasoning” and you can use it without getting the “The reasoning_content in the thinking mode must be passed back to the API” error.

Link: https://www.npmjs.com/package/n8n-nodes-deepseek-v4-thinking-fix

[test6]

where can select the no reasoning in n8n?

[zeka_cardoso]

Just open the node of a golden whale and you’ll see the “thinking mode” droplist