The first endpoint was closed. If you actually try and call it from the API you get this response:

> Hy3 preview is no longer available as a free model. It has transitioned to a paid model. Continue using it here: https://openrouter.ai/tencent/hy3-preview

The Kilo Code may have free traffic but if you check the numbers is still inconsequential relative to the trillions of tokens through OpenRouter.