Welcome to AI21 Developer Platform!

AI21 provides AI systems and foundation models designed to solve complex, real-world challenges. Its solutions are reliable, efficient, and transparent—especially effective for long-context tasks critical to enterprises, such as:

• Grounded question answering across lengthy documents
• Chat completion
• Financial data analysis
• Retrieval-Augmented Generation (RAG) workflows

AI21’s Maestro

Maestro is built to handle complex tasks through structured planning. It analyzes multiple strategies, estimates success rates and costs, dynamically creates and executes tailored plans, and validates results based on your requirements. Maestro ensures control, reliability, and observability—setting a new standard for enterprise AI.
Learn more about Maestro.

Jamba Family of Open Models

Jamba models deliver up to 2.5x faster inference than leading models of similar size.
They are available for private deployment, including VPC and on-premise, and are optimized for tasks like:

• Conversational AI
• Financial analysis
• Long-context RAG
• Grounded Q&A from large documents

Learn more about the Jamba Models.

Conversational RAG

A solution that enables you to build conversational experiences that interact with your organizational data.

Learn more about Conversational RAG.

Flexible deployments for the enterprise

You can choose the option that meets your needs here.

Accessing our models and solutions

You can access our tools and models through several different mechanisms:

• Python SDK: We provide a Python SDK to simplify access to all our models and tools from your Python code. The SDK provides code completion tips, documentation, support for synchronous and asynchronous calls, and much more.

• REST API: Under the hood, our SDK, playground, and cloud platform implementations access our models through our public REST API.

• Cloud platforms: We provide model access from all the leading cloud providers. See the full list here.

• Other third-party services: Our models are also available on other third-party systems such as LangChain and LlamaIndex. Check your toolchain to see if AI21 is available.

Next steps

• Try our Quickstart to learn a bit about prompts
• Learn how to use our SDK