Cursor supports a custom OpenAI-compatible base URL. Whether a particular Infistar model works depends on your Cursor version, account permissions and the API format required by that model.

​
Settings

Cursor’s official support instructions describe Settings → Models → API Keys, with Use OpenAI API Key and Override OpenAI Base URL. A team administrator can restrict personal API keys or hide these controls.
  1. Check that your account permits personal API keys.
  2. Enter your own Infistar key and use https://infistar.ai/v1 for international access, or https://infistar.cc/v1 for mainland China.
  3. Copy the exact model ID from models and pricing. Enable the key and custom URL, then start a new local chat to test.
  4. Confirm that requests reach Infistar and verify the model’s required API format, streaming and tool support.

​
Verification boundary

We have checked that Cursor offers these settings. We have not completed end-to-end testing of the current Cursor version with every Infistar model. A configurable endpoint is not a guarantee that every model or feature works. Bringing your own key does not replace all Cursor features or charges. Features such as Tab completion have separate restrictions; check Cursor’s current documentation and your account settings. Sources checked on 2026-10-21: Cursor API Keys and Cursor’s official support discussion of custom endpoints and team permissions. For existing terminal setup guides, see Codex and Claude Code. Do not expose your API key or use unknown proxies to work around a client restriction.