Fail connecting to Claude models

Bug Reports
1

Describe the Bug

Fail connecting to Claude model

Steps to Reproduce

Ask something to Claude 4.5 sonnet or 4.1 opus

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.46
VSCode Version: 1.99.3
Commit: b9e5948c1ad20443a5cecba6b84a3c9b99d62580
Date: 2025-10-14T01:21:46.830Z (2 days ago)
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.6.0

For AI issues: which model did you use?

Claude Opus 4.1

For AI issues: add Request ID with privacy disabled

396d52c9-d07a-4734-bee3-3dbe8429dbc4

Does this stop you from using Cursor

No - Cursor works, but with this issue

2

Hey, thanks for the report. To help diagnose the issue, please clarify:

  • The exact error message when trying to use Claude models
  • Whether you’re using Cursor’s built-in Claude API or your own API key
  • Whether other models (e.g., GPT-5) work
  • Whether you use a VPN, proxy, or any software that controls your internet connection

Also try:

  • Connecting to a different network (e.g., a mobile hotspot)
  • Ensuring your firewall isn’t blocking the connection