"We're having trouble connecting to the model provider"

[dxw91]

Describe the Bug

“We’re having trouble connecting to the model provider. This might be temporary - please try again in a moment.”

Trying to use horizon beta with openrouter an getting this error after the first code “edit” action. Is this normal?

Steps to Reproduce

Setup openrouter
Use openrouter/horizon-beta

Expected Behavior

It doesn’t stop.

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.3.9 (Universal)
VSCode Version: 1.99.3
Commit: 54c27320fab08c9f5dd5873f07fca101f7a3e070
Date: 2025-08-01T20:27:38.378Z (1 day ago)
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 23.5.0

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. I just checked, and this model works for me. You might need to enable these settings on OpenRouter for it to work.

OpenRouter

[Andrew-Forster]

Same issue, occurs ONLY during tool calls. Other than that the model works, but tool calls become annoying to handle.