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[FEATURE]: Support DeepSeek-V4 models #24093
Description
Feature hasn't been suggested before.
- I have verified this feature I'm about to request hasn't been suggested before.
Describe the enhancement you want to request
DeepSeek just dropped V4, and the DeepSeek provider support should be updated to align with the new API.
- Model identifiers changed to
deepseek-v4-flashanddeepseek-v4-pro. - New
thinkingandreasoning_effortkeys. reasoning_contentof previous turns must be passed back to the API. (This is because V4 no longer discards reasoning in multi-turn conversations. See Fig. 7 in their techical report.)
API Reference: https://api-docs.deepseek.com/
Reacted by Jensen, zegu, wuwen, Tomasz Boguszewski, Brendan Duke, Andy Kuo Tsai Shuo, WXYK, Elusive Bob, Stanley, Coy Geek and 1 more
Reacted by zegu, wuwen, Brendan Duke, Andy Kuo Tsai Shuo, Elusive Bob, Stanley and Coy Geek
Activity
github-actions commentedon Apr 24, 2026
This issue might be a duplicate of existing issues. Please check:
thompson0012 commentedon Apr 25, 2026
same to Ollama
deepseek-v4-flash:cloud
audinue commentedon Apr 25, 2026
GoodCoder666 commentedon Apr 25, 2026
@audinue That's caused by the new thinking management method. I just updated the issue description to reflect this.
kamikazechaser commentedon Apr 25, 2026
I'm getting a lot of the same errors as @audinue. Provider is OpenRouter. Makes DeepSeek v4 completely unusable after these error start popping up practically wasting the entire context.
#24250 should fix this.
GoodCoder666 commentedon Apr 25, 2026
btw is this fixed in v1.14.24?
Elusive-bob commentedon Apr 26, 2026
Waiting for a fix
rekram1-node commentedon Apr 27, 2026
All deepseek things should be fixed and working, if a provider is missing deepseek models watch models.dev for prs
If you are still encountering issues come join discussion here:
#24569 (comment)
There is a lingering bug for openrouter but if u use custom provider ensure you follow guide i commetned about.