Developer API Documentation

OpenAI-compatible REST API for 400+ AI models. Chat, image, video, audio, and text endpoints. Get started in minutes.

Up and running in 3 steps

OpenAI-compatible REST API. Use your favorite SDK or HTTP client. Chat, images, video, audio, and text — all with a single API key.

Subscribe to a Pro, Ultra, or Max plan, then create an API key in Settings → API.

Get your API key

Subscribe to a Pro, Ultra, or Max plan, then create an API key in Settings → API.

Install the OpenAI SDK (optional)

Keys start with kr_live_ followed by 40 hex characters. Store securely — keys are hashed and can't be retrieved.

Make your first request

All requests require an API key passed in the

API Key Authentication

Keys start with kr_live_ followed by 40 hex characters. Store securely — keys are hashed and can't be retrieved.

All requests require an API key passed in the

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Krater API documentation · Krater API access · AI model directory