Cursor isn't using my anthropic key

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I am on enterprise plan. I have added my anthropic key but still it used all the enterprise plan usage and now I am getting request limit has reached message. Crosscheck the usage at anthropic dashboard, cursor didn’t used the api key. Currently I have exhausted the usage limit of this month :frowning:

Steps to Reproduce

Just add the key , use agent/chat/ask and check the usage

Expected Behavior

To use the custom anthropic dev key instead of standard cursor models

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.36
VSCode Version: 1.105.1
Commit: 9cd7c8b6cebcbccc1242df211dee45a4b6fe15e0
Date: 2025-11-26T03:43:48.079Z (5 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 25.1.0

For AI issues: which model did you use?

Opus 4.5, sonet 4.5, haiku 4.5

Does this stop you from using Cursor

Yes - Cursor is unusable

Hey, thanks for the report. Since you’re on an Enterprise plan, there’s an important check to perform first:

Check with your team administrator - Enterprise admins can disable custom API keys (BYOK) for team members through the team dashboard. Please verify with your admin that custom API keys are allowed for your account.

If custom keys are enabled, please provide:

  • A screenshot of your API key configuration (Settings > Models > Anthropic API section) - check if the toggle is actually enabled and not greyed out
  • Request ID from a recent chat/agent interaction (Chat context menu > Copy Request ID)

Temporary workaround: Go to Settings > Models > Add Model (custom models section) and add:

  • claude-sonnet-4-5-20250929 (for Sonnet 4.5)
  • claude-opus-4-1 (for Opus 4.5)
  • claude-sonnet-4-5-haiku (for Haiku 4.5)

Then select these custom model names instead of the dropdown options. This workaround helped users in a similar topic.

Let me know what you find!