AI21 Labs / ai21.com
AI21 Labs' platform providing access to Jamba, Jurassic, and specialised NLP models through API, with capabilities for long-context processing, text improvement, and enterprise language AI.
Pricing
Free
Free plan
Yes
Category
Developer Tools
Platforms
2
Free plan
Yes
API access
Yes
Open source
No
Platforms
2
AI21 Labs is an Israeli AI company that has developed multiple notable language models including the Jamba model family and the earlier Jurassic models. AI21 Studio is the developer platform providing API access to these models and specialised text capabilities.
Jamba, AI21's most recent model family, uses a hybrid SSM/Transformer architecture that achieves very long context windows (256K tokens) with significantly better efficiency than pure Transformer models at long context lengths. For applications requiring very long document processing — legal documents, financial reports, research papers — Jamba's long context capabilities are practically valuable.
Beyond the core generative models, AI21 provides specialised NLP tools: Wordtune Spices generates creative ideas and alternative expressions for writing improvement; the Paraphrase API generates alternative formulations of text preserving meaning; the Summarise API provides extractive and abstractive summarisation; and the Text Improvements API suggests grammar, clarity, and style corrections.
AI21 is also co-developer of the Attention-Free Transformer (AFT) and has made significant contributions to NLP research. The company has raised over $1.4 billion in funding from investors including Google and Nvidia.
For developers who want long-context language model capabilities or specialised NLP APIs as an alternative to OpenAI, AI21 Studio provides competitive options.
AI21 Studio runs as generative ai software built around text workflows. Users typically start with a prompt, upload, or connected data source, and the underlying model handles the heavy lifting before returning a result you can refine or export. It's available on web and api, with API access for teams that want to embed it into their own products.
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The capabilities that matter most for teams evaluating AI21 Studio.
Hybrid SSM/Transformer architecture achieving 256K token context windows with efficiency advantages for very long document processing use cases.
Task-specific APIs for paraphrasing, summarisation, text improvement, and contextual answers providing targeted capabilities beyond general text generation.
API format compatible with OpenAI's SDK enabling migration of existing OpenAI integrations to AI21 with minimal code changes.
Free $90 in API credits. Pay-as-you-go from $0.2/M tokens. Enterprise custom pricing. Various model pricing.
Model
Usage-based
Starting price
Free
Free trial
No
OpenAI API dominates the developer market with stronger ecosystem. Anthropic Claude provides strong long-context capabilities. Cohere provides enterprise NLP APIs. Mistral API provides efficient open weight models.
A side-by-side look at the closest alternative in this category.
Key facts about model providers, platforms, and team support.
Model Provider
AI21 Labs
Models
Jamba 1.5, Jurassic-2
Platforms
Web, API
Deployment
SaaS, API
Integrations
Python SDK, JavaScript SDK, OpenAI-compatible, REST API
Team Collaboration
No
Launch Year
2022
Compliance signals and data-handling notes as reported by the vendor.
Review AI21 Labs' data handling policy. API requests and submitted text processed on AI21's infrastructure.
Review AI21 Labs' privacy policy. Text submitted through the API is processed on AI21's infrastructure.
Editorial Verdict
AI21 Studio is a strong choice for developers who need very long context window processing or specialised NLP APIs (paraphrase, summarise, text improvement) as alternatives to OpenAI.
Last verified July 24, 2026.
Free $90 in API credits. Pay-as-you-go from $0.2/M tokens. Enterprise custom pricing. Various model pricing.
Free $1 in monthly credits. Serverless API from $0.10/M tokens for small models. Dedicated deployment custom.
Review AI21 Labs' data handling policy. API requests and submitted text processed on AI21's infrastructure.
SOC 2 Type II. GDPR compliant. Enterprise includes data handling agreements.
Review AI21 Labs' privacy policy. Text submitted through the API is processed on AI21's infrastructure.
Review Fireworks AI data handling policy. Inference requests processed on Fireworks infrastructure.
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