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Error from provider (DeepSeek): The reasoning_content in the thinking mode must be passed back to the API. #24334
Description
Description
{ "name": "APIError", "data": { "message": "Error from provider (DeepSeek): The reasoning_contentin the thinking mode must be passed back to the API.", "statusCode": 400, "isRetryable": false, "responseHeaders": { "cf-ray": "9f1e8cb56dd8a8fe-CMH", "connection": "keep-alive", "content-length": "207", "content-type": "application/json", "date": "Sat, 25 Apr 2026 15:58:32 GMT", "server": "cloudflare" }, "responseBody": "{\"error\":{\"message\":\"Error from provider (DeepSeek): Thereasoning_content in the thinking mode must be passed back to the API.\",\"type\":\"invalid_request_error\",\"param\":null,\"code\":\"invalid_request_error\"}}", "metadata": { "url": "https://opencode.ai/zen/go/v1/chat/completions" } } }
Plugins
KiloCode with VsCode Ide using opencode API
OpenCode version
I use KiloCode
Steps to reproduce
Just normal Promot in KiloCode
Screenshot and/or share link
Operating System
MacOs
Activity
github-actions commentedon Apr 25, 2026
This issue doesn't fully meet our contributing guidelines.
What needs to be fixed:
_No response_)Please edit this issue to address the above within 2 hours, or it will be automatically closed.
This issue might be a duplicate of existing issues. Please check:
If you believe this was flagged incorrectly, please let a maintainer know.
github-actions commentedon Apr 25, 2026
Thanks for updating the issue! It now includes the error details, environment info, and steps to reproduce. Everything looks good — the compliance flag has been removed.
igzard commentedon Apr 25, 2026
same here
mstrYoda commentedon Apr 26, 2026
I faced with the same issue while using OpenCode webui:
The
reasoning_contentin the thinking mode must be passed back to the API.rekram1-node commentedon Apr 26, 2026
If you are using KiloCode this is a bug in Kilo.
bkaragozpg commentedon May 24, 2026
I have the same issue on windows opencode cli, with both deepseek v4 flash and pro.
RequestExecutor.execute: Provider request failed with HTTP 400: {"error":{"message":"Error from provider (DeepSeek): The
reasoning_contentin the thinking mode must be passed back to the API.","type":"invalid_request_error","param":null,"code":"invalid_request_error"}}aria-amini commentedon May 25, 2026
Getting same error for deepseek v4. Version 1.15.6 and below still work
md-rifatkhan commentedon Aug 5, 2026
any solution?
sawa-ko commentedon Aug 7, 2026
Same here.
rekram1-node commentedon Aug 7, 2026
need more info