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Some thinking models are not compatible with tool usage in Agent mode. #17097

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opened 2026-02-21 19:31:15 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 19:31:15 -05:00
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Originally created by @Moiyu1998 on GitHub (Sep 10, 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

1.8.1

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

https://github.com/user-attachments/assets/674db700-8613-497a-acfe-88bc91e56093

In Agent mode, multiple model calls can become nested. As shown above, each subsequent deep thinking process is nested within the previous one, and the duration of this deep thinking keeps increasing without stopping, even after all results have been output. All results, including the final output, are contained within the deep thinking process. This issue is mainly observed with the doubao-seed-1-6-thinking-250715 model. The Pro/deepseek-ai/DeepSeek-R1 model exhibits a similar situation.

✔️ Expected Behavior

Deep thinking processes should not be nested, and the results of the thinking process should be properly separated from the final output.

❌ Actual Behavior

No response

Originally created by @Moiyu1998 on GitHub (Sep 10, 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 1.8.1 ### Cloud or Self Hosted Self Hosted (Docker) ### Steps to reproduce https://github.com/user-attachments/assets/674db700-8613-497a-acfe-88bc91e56093 In Agent mode, multiple model calls can become nested. As shown above, each subsequent deep thinking process is nested within the previous one, and the duration of this deep thinking keeps increasing without stopping, even after all results have been output. All results, including the final output, are contained within the deep thinking process. This issue is mainly observed with the doubao-seed-1-6-thinking-250715 model. The Pro/deepseek-ai/DeepSeek-R1 model exhibits a similar situation. ### ✔️ Expected Behavior Deep thinking processes should not be nested, and the results of the thinking process should be properly separated from the final output. ### ❌ Actual Behavior _No response_
yindo added the 🤖 feat:agent label 2026-02-21 19:31:15 -05:00
yindo closed this issue 2026-02-21 19:31:15 -05:00
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Reference: langgenius/dify#17097
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