I have searched the existing issues and discussions.
Problem Description
There is an undesired behavior, when chat is not in English, the folow-ups are in English. Maybe it depends on the UI language, not exactly on English, but it's still an undesired behavior because follow-ups should be in the same language that user and AI use in the chat
Desired Solution you'd like
Add a sentence "Use the same language used in the chat" or similar into the default follow-up generation prompt
Alternatives Considered
No response
Additional Context
No response
Originally created by @light-and-ray on GitHub (Aug 18, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/16707
### Check Existing Issues
- [x] I have searched the existing issues and discussions.
### Problem Description
There is an undesired behavior, when chat is not in English, the folow-ups are in English. Maybe it depends on the UI language, not exactly on English, but it's still an undesired behavior because follow-ups should be in the same language that user and AI use in the chat
<img width="3135" height="1521" alt="Image" src="https://github.com/user-attachments/assets/6bd9d36b-cc68-4e62-99f1-96f26b3166ff" />
### Desired Solution you'd like
Add a sentence _"Use the same language used in the chat"_ or similar into the default follow-up generation prompt
### Alternatives Considered
_No response_
### Additional Context
_No response_
@tjbck I see you changed this patch and it reverted the behaviour back to bad
Use the conversation's primary language; default to English if multilingual.
I think this prompt is bad, the model thinks it is multilingual so it uses English, in spite of the chat being entirely in Russian
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@light-and-ray commented on GitHub (Sep 1, 2025):
@tjbck I see you changed this patch and it reverted the behaviour back to bad
> - Use the conversation's primary language; default to English if multilingual.
I think this prompt is bad, the model thinks it is multilingual so it uses English, in spite of the chat being entirely in Russian
Generally I don't see why you mentioned English at all. If conversation is a mix between Japanese and Korean for instance, why should it switch to English
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@light-and-ray commented on GitHub (Sep 1, 2025):
Generally I don't see why you mentioned English at all. If conversation is a mix between Japanese and Korean for instance, why should it switch to English
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Originally created by @light-and-ray on GitHub (Aug 18, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/16707
Check Existing Issues
Problem Description
There is an undesired behavior, when chat is not in English, the folow-ups are in English. Maybe it depends on the UI language, not exactly on English, but it's still an undesired behavior because follow-ups should be in the same language that user and AI use in the chat
Desired Solution you'd like
Add a sentence "Use the same language used in the chat" or similar into the default follow-up generation prompt
Alternatives Considered
No response
Additional Context
No response
@tjbck commented on GitHub (Aug 18, 2025):
Addressed with
094a82b264in dev!@light-and-ray commented on GitHub (Sep 1, 2025):
@tjbck I see you changed this patch and it reverted the behaviour back to bad
I think this prompt is bad, the model thinks it is multilingual so it uses English, in spite of the chat being entirely in Russian
@light-and-ray commented on GitHub (Sep 1, 2025):
Generally I don't see why you mentioned English at all. If conversation is a mix between Japanese and Korean for instance, why should it switch to English