temperature and top_p` cannot both be specified for this model. Please use only one.

[noinlijin]

📱 Client Type

Web (Desktop Browser)

💻 Operating System

Ubuntu

📦 Deployment Platform

Other

🔧 Deployment Mode

server db (lobe-chat-database image)

📌 Version

v1.142.2

🌐 Browser

Chrome

🐛 Bug Description

the issue like. #9658

only close temperature it works

📷 Recurrence Steps

No response

🚦 Expected Behavior

No response

📝 Additional Information

No response

🛠️ Willing to Submit a PR?

None

✅ Validations

• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a LobeChat issue and not a third-party library or provider issue.
• Check that this is a concrete bug. For Q&A, please use GitHub Discussions or join our Discord Server.

[lobehubbot]

👀 @noinlijin

Thank you for raising an issue. We will investigate into the matter and get back to you as soon as possible.
Please make sure you have given us as much context as possible.

[lobehubbot]

@ONLY-yours @sxjeru - This is a model parameter configuration issue. The error indicates that temperature and top_p cannot both be specified for a particular model. Please investigate the model settings validation logic.

[dosubot[bot]]

This error happens because certain models—especially Claude 4+ models accessed via the OpenAI or Bedrock APIs—do not allow both temperature and top_p to be set at the same time. If both are included in the request, the API returns an error asking you to use only one parameter. This is a known issue and is tracked in the repo (see issue #9658).

LobeChat has logic to handle this for most providers: for affected models (like claude-opus-4-1, claude-sonnet-4-5, etc.), if you set temperature, only temperature is sent; if you leave temperature unset, only top_p is sent (see PR #9627, PR #9476). However, if you use the OpenAI channel to call Claude models, this conflict can still occur because the OpenAI proxy does not resolve it.

To avoid the error, use only one of the sliders (temperature or top_p) for these models. If you want to use both parameters, switch to a model/provider that supports them together. For Claude models, the recommended solution is to use the Anthropic channel directly instead of the OpenAI channel (details).

Some OpenAI models (like gpt-4o-search-preview) do not support either parameter at all—so for those, both temperature and top_p should be left unset (see here).

For more details and updates, you can follow the linked issues and PRs.

To reply, just mention @dosu.

---

^{How did I do? Good | Irrelevant | Incorrect | Verbose | Hallucination | Report 🐛 | Other}    

[github-actions[bot]]

Found 3 possible duplicate issues:

1. bug of temperature and top_p cannot be used simultaneously,when use claude-sonnet-4-5 #10069
2. OpenAI API Proxy parameter conflict: temperature and top_p cannot be used simultaneously #9658
3. Claude 4.5 from bedrock not working. #9523

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
• To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

[sxjeru]

This is an issue from the upstream model provider. Some models indeed do not support specifying both parameters simultaneously.

---

This comment was translated by Claude.

Original Content

这是上游模型提供商的问题,有些模型确实不支持同时指定这两个参数。