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AIsa is compatible with standard OpenAI, Anthropic, and Gemini SDK formats. You can use your existing code and libraries by changing two settings: the base URL and your API key. Not every model supports every route. The model catalog lists supported routes per model; calling an unsupported route returns 400 model_route_not_supported.

OpenAI SDK

Models from other families - Claude, Gemini, DeepSeek, Qwen, and more - are also reachable through Chat Completions with their AIsa model ID.

Anthropic SDK

The Anthropic SDK appends /v1/messages itself, so the base URL has no /v1.
The same setting works for tools built on the Anthropic SDK, such as Claude Code: see Use AIsa in Claude Code.

Google Gen AI SDK (Gemini)

AIsa reads the key from Authorization: Bearer or x-api-key, not from Google’s x-goog-api-key header, so pass it as an extra header.
Python

Other frameworks

Any framework that lets you set an OpenAI-compatible base URL - LangChain, LlamaIndex, the Vercel AI SDK, LiteLLM - works the same way: base URL https://api.aisa.one/v1, key AISA_API_KEY.

Next steps

Model catalog

Model IDs, routes, and context windows.

Chat Completions reference

Every parameter, with an interactive playground.