Deepseek R1 and V3.1 issues

[tlavuvu]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Why is it so hard to use Deepseek models? If i use R1, it doesn’t work on agent mode. V3.1 works sometimes and they keep creating some in Chinese

Steps to Reproduce

Just try to write code with either Deepseek R1 or V3.1

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.26 (Universal)
VSCode Version: 1.105.1
Commit: f628a4761be40b8869ca61a6189cafd14756dff0
Date: 2025-11-24T05:39:06.655Z (9 hrs ago)
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 25.0.0

For AI issues: which model did you use?

Deekseek R1 and V3.1

Does this stop you from using Cursor

No - Cursor works, but with this issue

[deanrie]

Hey, thanks for the report. Let’s clarify both issues:

DeepSeek R1 not working in agent mode:

• This is expected behavior. R1 is a reasoning model and it doesn’t support agent mode. You can still use R1 in regular chat, just without agent features.

DeepSeek V3.1 generating Chinese text:

• This looks like a bug that was fixed before but seems to have come back. To help investigate, please share:
  • A screenshot showing the Chinese text that V3.1 is generating
  • The Request ID from when this happens (Chat menu → Copy Request ID)

Once we have these details, I can pass the issue to the team.

[tlavuvu]

The bottom 2 folders where created by Deepseek.
83b5ce7a-351f-4064-af0f-bd66b3d23c04