AI21 Labs API

AI21 builds Foundation Models and AI Systems for the enterprise. Power your most critical enterprise workflows with accurate, reliable, and scalable AI.

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More in LLM APIs

OpenAI API

Hosted GPT-family language, image, speech and embedding models behind a single REST API, with function calling and structured outputs.

Anthropic API

Access to the Claude model family over REST, with tool use, long context windows and prompt caching.

Google Gemini API

Google's multimodal Gemini models via API key, with a free tier for prototyping and support for large context inputs.

Groq

Very fast inference for open-weight models on custom hardware, exposed through an OpenAI-compatible endpoint.

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Category	LLM APIs
Authentication	See docs
Pricing	See site
Website	https://www.ai21.com/
Docs	https://www.ai21.com/
Last checked	2026-10-14
As JSON	/api/v1/directory/ai21-labs-api.json