OnAPI

You point your existing OpenAI-style client at OnAPI, change the base_url, and send requests for text, images, video or code to GPT, Claude, Gemini, Sora, Veo or Banana with a single key.

OnAPI is an AI model API gateway for developers, so one endpoint replaces separate accounts with each provider.

It is fully OpenAI-compatible and works out of the box with the OpenAI SDK, LangChain, Claude Code, Cursor, Cline and Cherry Studio.

That means most setups need no code beyond the one-line change.

There are two channels.

The value tier handles everyday traffic at lower cost.

The official tier uses real paid keys that hit the providers directly, which is the one to pick for critical workloads where stability matters.

Billing is by usage, and you can pay with Alipay, WeChat Pay or crypto, so no international credit card is needed.

That is a real convenience if juggling bills across several vendors has been a pain.