Model selection resets to Composer 1 when switching Ask/Agent modes

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

When using a specific model (e.g., Claude 4.5), switching between modes (Ask ↔ Agent) causes the model selection to reset to Composer 1 instead of persisting my choice. Forces manual re-selection every time which sucks.

Steps to Reproduce

Steps to Reproduce:
Open Cursor Chat / Composer.
Select Haiku 4.5
Switch modes (e.g., from “Ask” to “Agent” or vice-versa).
Observe the model dropdown.

Expected Behavior

The selected model (claude-haiku) should persist across mode switches.

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.2.20
VSCode Version: 1.105.1
Commit: b3573281c4775bfc6bba466bf6563d3d498d1070
Date: 2025-12-12T06:29:26.017Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 25.1.0

Does this stop you from using Cursor

No - Cursor works, but with this issue

Cursor silently switches from Claude to Composer without user consent
2

Hey, thanks for the report.

This is a known issue with model selection persistence when switching modes. The team is working on a fix.

As a temporary workaround, you can set the default model for each mode separately. In the model selection dropdown, there’s a setting where you can specify the default model for Ask, Agent, and other modes - then each mode will use its preset model. See an example solution here: Choose a model for each mode - #3 by Artemonim

Let me know if this helps.