Cursor's settings let you override the OpenAI base URL. Pointing it at AIgateway unlocks Claude, Gemini, Kimi, Llama, and every other model without leaving the Cursor UI.
Cursor → Settings (Cmd/Ctrl+,) → Models. Fill in the 'Override OpenAI Base URL' field with https://api.aigateway.sh/v1 and put your sk-aig- key in the 'OpenAI API Key' field. Click '+ Add Model' and add each provider/slug you want (e.g. anthropic/claude-opus-4.7, openai/gpt-5.4, moonshot/kimi-k2.7-code), then Verify.
In Cursor's model dropdown, select a slug you added — for example anthropic/claude-opus-4.7 or moonshot/kimi-k2.7-code. Same chat panel, different brain.