My inline chat function can't work in jupyter notebook

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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

In Python files, I can use Ctrl + K to open inline chat and execute chats or modifications, but this doesn’t work in .ipynb files—the model doesn’t respond (selected models: Haiku 4.5 and Sonnet 4.5).

Steps to Reproduce

  1. Create a jupyter file
  2. create a code box
  3. Use inline chat window
  4. talk to the model

Expected Behavior

Answer questions when using alt + enter, modify files when directly pressing enter

Operating System

Windows 10/11

Version Information

Version: 2.5.26
Commit: 7d96c2a03bb088ad367615e9da1a3fe20fbbc6a0
Date: 2026-02-26T04:57:56.825Z
Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Cursor/2.5.26 Chrome/142.0.7444.265 Electron/39.4.0 Safari/537.36

For AI issues: which model did you use?

Haiku 4.5 and Sonnet 4.5

For AI issues: add Request ID with privacy disabled

Request ID：3b4f54a6-b04b-4f4d-b41f-e09d42215a61

Does this stop you from using Cursor

No - Cursor works, but with this issue

3

Hey, thanks for the report. There used to be a similar issue with Ctrl+K in Jupyter that was fixed in v2.4 (see the related thread), but in your case the symptoms look a bit different. The model does not respond at all, instead of stopping after two lines.

A few questions to narrow it down:

  1. When you press Ctrl+K in a notebook cell, does the inline edit UI open? Do you see a loading indicator, or does nothing happen at all?
  2. Have you tried a different model to rule out an issue with a specific model?
  3. Can you share a screenshot or a screen recording of what happens when you try Ctrl+K in a .ipynb file?
4

Thank you for your reply. Strangely, when I opened Cursor today to try recording a video for you, the feature started working normally again. I suspect this might be related to the widespread down issues Anthropic experienced yesterday? In any case, the problem has temporarily disappeared for now.