"Unable to reach the model provider"

Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Can’t use Cursor chat due to an error “Unable to reach the model provider”.

Steps to Reproduce

I type in the chat Agent / Auto mode and when I hit enter, the error keeps appearing

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.0.43 (Universal)
VSCode Version: 1.99.3
Commit: 8e4da76ad196925accaa169efcae28c45454cce0
Date: 2025-10-30T18:49:27.589Z (5 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

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hi Helena, from observing this forum for the last few weeks, I’ve seen this problem show up a few times; it usually turns out to be temporary or a network connectivity problem.

Could you share which model you’re using and whether it’s via a subscription or an API key? GPT-5 seems to show this intermittent problem, Claude too, and creating a new chat could help, so please try a new chat.

Let’s also run some diagnostics to find the cause:

Network diagnostics: Open Cursor → Settings → Network → Run Diagnostics. Share the results here.

Disable HTTP/2: Press CMD + , to open Settings, search HTTP/2, enable Disable HTTP/2, restart Cursor and test again.

Extra details: Are you on a VPN or corporate network? Any firewall/antivirus running? And, can you share a request ID? (Chat menu → Copy Request ID). Staff members may be able to help review based on the request ID.

3

Hi Arun! The network diagnostic didn’t show any errors. I’ve tried disabling HTTP/2 and restarting + new chat and is working again.

Thank you very much!

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