I’m trying to connect Cursor 3.1 with OpenRouter. I’ve already set up the OpenAI settings with the OpenRouter API in Cursor:
Entered my API key
Set the Override OpenAI Base URL to: OpenRouter
Hey, the config is set up correctly, but on the Free plan, BYOK (your own API key via Override OpenAI Base URL) doesn’t work for Agent and Composer/Edit. This is a by-design limitation, not a bug. The backend returns an error like: “Agent and Edit rely on custom models that require a paid subscription”.
To use OpenRouter with your own key in Agent/Edit, you need a paid subscription (Pro or higher). On the Free plan, custom models via OpenRouter aren’t available.