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The non-thinking mode of the claude-sonnet-4-5-20250929 model has not been responding for a long time. #19423

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opened 2026-02-21 19:59:37 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:59:37 -05:00
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Originally created by @Moiyu1998 on GitHub (Oct 16, 2025).

Self Checks

  • I have read the Contributing Guide and Language Policy.
  • This is only for bug report, if you would like to ask a question, please head to Discussions.
  • I have searched for existing issues search for existing issues, including closed ones.
  • I confirm that I am using English to submit this report, otherwise it will be closed.
  • 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：）
  • Please do not modify this template :) and fill in all the required fields.

Dify version

1.9.0

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

Image

As shown in the image above, when the thinking mode is turned off, it keeps loading without returning any result. Upon checking the backend logs, no requests are being sent at all.

Image

However, when the thinking mode is enabled, it responds successfully.

✔️ Expected Behavior

claude-sonnet-4-5-20250929 can return results normally even when not in thinking mode.

❌ Actual Behavior

No response

Originally created by @Moiyu1998 on GitHub (Oct 16, 2025). ### Self Checks - [x] I have read the [Contributing Guide](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) and [Language Policy](https://github.com/langgenius/dify/issues/1542). - [x] This is only for bug report, if you would like to ask a question, please head to [Discussions](https://github.com/langgenius/dify/discussions/categories/general). - [x] I have searched for existing issues [search for existing issues](https://github.com/langgenius/dify/issues), including closed ones. - [x] I confirm that I am using English to submit this report, otherwise it will be closed. - [x] 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：） - [x] Please do not modify this template :) and fill in all the required fields. ### Dify version 1.9.0 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce <img width="947" height="833" alt="Image" src="https://github.com/user-attachments/assets/2da298b4-bf43-4ec2-abb6-a9d22c2342ff" /> As shown in the image above, when the thinking mode is turned off, it keeps loading without returning any result. Upon checking the backend logs, no requests are being sent at all. <img width="949" height="840" alt="Image" src="https://github.com/user-attachments/assets/a45a7197-f373-441b-81ca-a4f62eedd0c6" /> However, when the thinking mode is enabled, it responds successfully. ### ✔️ Expected Behavior claude-sonnet-4-5-20250929 can return results normally even when not in thinking mode. ### ❌ Actual Behavior _No response_
yindo added the 🐞 bug label 2026-02-21 19:59:37 -05:00
yindo closed this issue 2026-02-21 19:59:37 -05:00
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Reference: langgenius/dify#19423
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