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Cursor includes an OpenAI API key section with an Override OpenAI Base URL option. Point that option to SnapGen and add the exact model ID you want to use.

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Configure Cursor

1

Open model settings

Open Cursor Settings > Models and expand the API key settings.
2

Add the API key

Enable OpenAI API Key, enter your SnapGen key, and keep it in Cursor’s credential store.
3

Override the base URL

Enable Override OpenAI Base URL and enter https://api.snapgen.org/v1.
4

Add a model

Under Models, choose Add model and enter an exact ID such as gpt-5.4-mini, gpt-5.5, or gpt-5.6-sol.
5

Verify

Select the custom model in chat and send a short prompt. Review usage in the SnapGen Console.
Cursor controls which features are available with custom API keys. Chat can work while some hosted Cursor features still use Cursor-managed models or are unavailable for a custom route.

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Troubleshooting

Add the ID manually under Models and enable it. Cursor does not always import a third-party gateway’s model list automatically.
Check spelling and call GET /v1/models with the same key. Model IDs are case-sensitive.
Confirm Override OpenAI Base URL is enabled and contains the full https://api.snapgen.org/v1 value.
Custom models can differ in tool-calling behavior. Test file edits and terminal tool calls in a disposable branch before making the model a team default.