aid: ai21-labs name: AI21 Labs description: >- AI21 Labs is an enterprise foundation-model company best known for the Jamba family of open-weight hybrid Mamba/Transformer models and AI21 Maestro, a dynamic planning system that orchestrates tools, retrieval, and validated output during inference. The platform exposes a Bearer-token REST API at api.ai21.com covering chat completions, conversational RAG over a managed file library, batch processing, fine-tuning, and function calling. Official Python and TypeScript SDKs wrap the API with sync and async clients and integrate natively into LangChain and LlamaIndex. Jamba weights are also published on Hugging Face for self-hosted vLLM deployment. type: Index position: Provider access: 3rd-Party image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg tags: - AI - Foundation Models - LLM - Jamba - Mamba - RAG - Agents - Maestro - Inference - Enterprise AI - Fine-Tuning url: https://raw.githubusercontent.com/api-evangelist/ai21-labs/refs/heads/main/apis.yml created: '2026-05-23' modified: '2026-05-23' specificationVersion: '0.20' apis: - aid: ai21-labs:chat-completions name: AI21 Jamba Chat Completions API description: >- Conversational completions endpoint backed by the Jamba family of hybrid Mamba/Transformer models (Jamba 1.5 Mini, Jamba 1.5 Large, Jamba 1.6). Accepts a message array, system prompts, temperature, max tokens, tools, and streaming, returning assistant messages with usage metadata. humanURL: https://docs.ai21.com/reference baseURL: https://api.ai21.com/studio/v1 tags: - Chat - Completions - Jamba - LLM properties: - type: Documentation url: https://docs.ai21.com/reference - aid: ai21-labs:maestro name: AI21 Maestro API description: >- Dynamic planning system that, at inference time, determines the optimal sequence of actions to solve a task. Exposes run creation and retrieval endpoints, supports validated output for strict instruction following, and orchestrates RAG, web search, file libraries, MCP tools, and custom HTTP tools. humanURL: https://docs.ai21.com/docs/maestro baseURL: https://api.ai21.com/studio/v1 tags: - Maestro - Planning - Agents - Validated Output properties: - type: Documentation url: https://docs.ai21.com/docs/maestro - aid: ai21-labs:library name: AI21 File Library API description: >- Managed file storage for RAG workflows. Upload, list, retrieve, update, and delete documents that Maestro and Jamba endpoints can ground on at inference time. humanURL: https://docs.ai21.com/reference baseURL: https://api.ai21.com/studio/v1 tags: - Files - RAG - Library - Documents properties: - type: Documentation url: https://docs.ai21.com/reference - aid: ai21-labs:batch name: AI21 Batch API description: >- Asynchronous batch processing for large volumes of Jamba completions. Submit a batch job, poll for status, and download results when the run completes. humanURL: https://docs.ai21.com/reference baseURL: https://api.ai21.com/studio/v1 tags: - Batch - Async - Inference properties: - type: Documentation url: https://docs.ai21.com/reference - aid: ai21-labs:fine-tuning name: AI21 Fine-Tuning API description: >- Fine-tuning service for Jamba models supporting full, LoRA, and QLoRA strategies. Create training jobs from uploaded datasets and deploy the resulting model variants behind the standard chat completions endpoint. humanURL: https://docs.ai21.com/docs/fine-tuning baseURL: https://api.ai21.com/studio/v1 tags: - Fine-Tuning - LoRA - QLoRA - Training properties: - type: Documentation url: https://docs.ai21.com/docs/fine-tuning - aid: ai21-labs:python-sdk name: AI21 Python SDK description: >- Official Python SDK (ai21 on PyPI) wrapping the AI21 Studio REST API with sync and async clients, streaming support, LangChain / LlamaIndex integrations, and helpers for chat, Maestro, library, and batch. humanURL: https://github.com/AI21Labs/ai21-python baseURL: https://github.com/AI21Labs/ai21-python tags: - SDK - Python - PyPI properties: - type: Repository url: https://github.com/AI21Labs/ai21-python - aid: ai21-labs:typescript-sdk name: AI21 TypeScript / JavaScript SDK description: >- Official TypeScript and JavaScript client for the AI21 Studio API, with typed request and response models and streaming helpers for browser and Node.js runtimes. humanURL: https://github.com/AI21Labs/ai21-typescript baseURL: https://github.com/AI21Labs/ai21-typescript tags: - SDK - TypeScript - JavaScript properties: - type: Repository url: https://github.com/AI21Labs - aid: ai21-labs:huggingface name: AI21 Jamba on Hugging Face description: >- Open-weight releases of the Jamba family on Hugging Face for self-hosted inference via vLLM, Transformers, and other runtimes. humanURL: https://huggingface.co/ai21labs baseURL: https://huggingface.co/ai21labs tags: - Hugging Face - Open Weights - Jamba - Self-Hosted properties: - type: Repository url: https://huggingface.co/ai21labs common: - type: Website url: https://www.ai21.com/ - type: Documentation url: https://docs.ai21.com/ - type: APIReference url: https://docs.ai21.com/reference - type: GitHubOrganization url: https://github.com/AI21Labs - type: HuggingFace url: https://huggingface.co/ai21labs - type: Blog url: https://www.ai21.com/blog/ - type: Pricing url: https://www.ai21.com/pricing/ - type: ChangeLog url: https://docs.ai21.com/changelog - type: LinkedIn url: https://www.linkedin.com/company/ai21/ - type: X url: https://x.com/AI21Labs - type: LLMsTxt url: https://docs.ai21.com/llms.txt maintainers: - FN: Kin Lane email: kin@apievangelist.com