Unable to reach Opus 4.5 (base and thinking)

[titusdecali]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Unable to reach the model provider

Request ID: 7e87241c-7b28-4a29-adb2-ae47232fbf1e
{“error”:“ERROR_OPENAI”,“details”:{“title”:“Unable to reach the model provider”,“detail”:“We’re having trouble connecting to the model provider. This might be temporary - please try again in a moment.”,“additionalInfo”:{},“buttons”:,“planChoices”:},“isExpected”:false}
ConnectError: [unavailable] Error
at isu.$endAiConnectTransportReportError (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:6409:408775)
at rMo._doInvokeHandler (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:7026:21873)
at rMo._invokeHandler (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:7026:21615)
at rMo._receiveRequest (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:7026:20377)
at rMo._receiveOneMessage (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:7026:19194)
at zPt.value (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:7026:17286)
at _e._deliver (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:49:2962)
at _e.fire (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:49:3283)
at Lpt.fire (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbenc

h.desktop.main.js:6394:12156)
at MessagePort. (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:8973:18439)

Steps to Reproduce

Request ID: 7e87241c-7b28-4a29-adb2-ae47232fbf1e

Expected Behavior

Model is accessed

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.48
VSCode Version: 1.105.1
Commit: ce371ffbf5e240ca47f4b5f3f20efed084991120
Date: 2025-12-04T19:26:27.263Z (10 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 24.6.0

For AI issues: which model did you use?

Opus 4.5 base / thinking

For AI issues: add Request ID with privacy disabled

Request ID: 7e87241c-7b28-4a29-adb2-ae47232fbf1e

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report.

This looks like a known extension conflict. In a similar case, removing Nx Console fully resolved it:

• Fix: Unable to Reach Model Provider for All Models Except Composer1

Please check:

• Remove Nx Console (if installed) and restart Cursor
• Launch a clean profile and test Opus 4.5:
• In terminal: cursor --user-data-dir="CursorTempTest"
• Settings → Network → Run Diagnostics → share a screenshot
• Settings → Application → search “HTTP/2” → enable “Disable HTTP/2”, restart and re-test
• Check if other models work (Sonnet 4.5, GPT-4/5, Gemini) and which modes fail (Ask/Agent/Inline)

And please share:

• 2-3 fresh Request IDs from failing requests
• Console screenshot: Help → Toggle Developer Tools → Console, at the time of the error
• Network Diagnostics screenshots
• The list of installed extensions or confirmation that the clean profile works

Let me know if removing Nx Console or using a clean profile fixed it.

[titusdecali]

Hey @deanrie,
This only occurred in the last hour. I’ve been using the model without issue everyday, all day, for 2 weeks straight. I also do not have that extension installed. Other models work, just not Opus 4.5 or 4.5 thinking.

EDIT: I take that back. Now Sonnet 4.5 started having the same issue 30 seconds ago, but worked when I retried it. Is this just server overload?

EDIT 2: And now Opus 4.5 thinking finally accepted the request… will update if I continue seeing issues. I was unable to use Opus 4.5 for over an hour, and retried many times.

• T