# AI21: AI21

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

Generated by Yoast SEO v27.4, this is an llms.txt file, meant for consumption by LLMs.

## Pages
- [Compliance Monitoring](https://www.ai21.com/use-cases/compliance-monitoring/)
- [Terms of Use](https://www.ai21.com/terms-policies/terms-of-use/)
- [Privacy Policy](https://www.ai21.com/terms-policies/privacy-policy/)
- [Cookie List](https://www.ai21.com/terms-policies/cookie-list/)
- [Acceptable Use](https://www.ai21.com/terms-policies/acceptable-use/)

## Posts
- [AI21 Maestro’s accuracy fix for RAG’s blind spots](https://www.ai21.com/blog/structured-rag-enterprise-accuracy/)
- [Build AI agents you can trust, audit, and deploy with AI21 Maestro](https://www.ai21.com/blog/ai21-maestro-reliable-ai-agent/)
- [Introducing Jamba2: The open source model family for enterprise reliability and efficiency](https://www.ai21.com/blog/introducing-jamba2/)
- [Introducing Jamba Reasoning 3B: Tiny Model, Huge Possibilities](https://www.ai21.com/blog/introducing-jamba-reasoning-3b/)
- [All that glitters: When "gold\-like" answers mask functional failures on coding agent benchmarks](https://www.ai21.com/blog/gold-like-answers-benchmarks/)

## Glossary
- [What is an Agentic Trajectory?](https://www.ai21.com/glossary/ai-agent/what-is-an-agentic-trajectory/)
- [What is an Orchestration Layer?](https://www.ai21.com/glossary/foundational-llm/orchestration-layer/)
- [What is Model Context Protocol \(MCP\)?](https://www.ai21.com/glossary/ai-agent/what-is-model-context-protocol-mcp/)
- [What is State Mutation in AI Agents?](https://www.ai21.com/glossary/ai-agent/what-is-state-mutation-in-ai-agents/)
- [What is Parallel Subagent Execution?](https://www.ai21.com/glossary/ai-agent/what-is-parallel-subagent-execution/)

## Knowledge Hub
- [What are AI Hallucinations? Signs, Risks, \& Prevention](https://www.ai21.com/knowledge/ai-hallucinations/)
- [AI Security: Risks, Frameworks \& Best Practice](https://www.ai21.com/knowledge/ai-security/)
- [Enterprise LLM: Adoption, Use Cases \& Deployment](https://www.ai21.com/knowledge/enterprise-llm/)
- [What is Prompt Engineering? Techniques \& Use Cases](https://www.ai21.com/knowledge/prompt-engineering/)
- [What is a Foundation Model? Types, Applications \& Benefits](https://www.ai21.com/knowledge/foundation-model/)

## Events
- [AI and the Future of Work: From Hype to Real Impact](https://www.ai21.com/events/ai-and-the-future-of-work/)
- [From Probabilistic to Predictable: Building Enterprise\-Ready AI Workflows](https://www.ai21.com/events/enterprise-ai-workflows/)
- [AI Dev 26 x SF](https://www.ai21.com/events/ai-dev-2026/)
- [Nvidia GTC 2026](https://www.ai21.com/events/nvidia-gtc-2026/)
- [AWS re:Invent 2025](https://www.ai21.com/events/reinvent-2025/)

## Researches
- [When “gold\-like” answers mask functional failures on coding agent benchmarks](https://www.ai21.com/research/when-gold-like-answers-mask-functional-failures-on-coding-agent-benchmarks/)
- [How a 32\-bit overflow corrupted a CUDA kernel](https://www.ai21.com/research/how-a-32-bit-overflow-corrupted-a-cuda-kernel/)
- [Modular intelligence: a human\-like model for agent orchestration](https://www.ai21.com/research/modular-intelligence-a-human-like-model-for-agent-orchestration/)
- [Go big or go OOM: the art of scaling vLLM](https://www.ai21.com/blog/scaling-vllm-without-oom/)
- [One token to corrupt them all: a vLLM debugging tale](https://www.ai21.com/blog/vllm-debugging-mamba-bug/)

## Resources
- [Fnac Darty Taps AI21 to Accelerate Product Description Generation](https://www.ai21.com/resources/case-studies/product-description/)
- [Global Aerospace Leader Uses AI21 to Cut FAA Document Search Time](https://www.ai21.com/resources/case-studies/compliance-monitoring/)

## YAAP
- [Chunking Isn’t Dead\. One Size Doesn’t Fit All](https://www.ai21.com/yaap/chunking-isnt-dead-one-size-doesnt-fit-all/): There is no perfect chunk size\. Different questions need different views of the data, and fixed windows quietly cap your system’s performance\.
- [Stop Shipping Agents With Chat UIs](https://www.ai21.com/yaap/stop-shipping-agents-with-chat-uis/): Chat was a prototype\. Not a product\. Yuval and Aai break down why agent apps fail at the UI layer, and how AG\-UI becomes the missing glue\.
Tool calling is easy\. Shared state is not\. Yuval and Iran break down why MCP struggles with writing agents, and how isolation unlocks parallel execution\.
- [MCP Was Built for Tools, Not for Agents That Write](https://www.ai21.com/yaap/mcp-was-built-for-tools-not-for-agents-that-write/): Tool calling is easy\. Shared state is not\. Yuval and Iran break down why MCP struggles with writing agents, and how isolation unlocks parallel execution\.
- [Why AI Leaderboards Miss the Point](https://www.ai21.com/yaap/why-ai-leaderboards-miss-the-point/): Leaderboards reward averages\. Production rewards execution\. Yuval and Barak unpack the four gaps that turn good models into useful AI systems\.
- [Tool Calling 2\.0: How MCP Is Standardizing AI Connections](https://www.ai21.com/yaap/tool-calling-2/): Exploring LLMs as judges in AI evaluation, covering relative/absolute ranking, fine\-grained evaluation, and use cases like data filtering\. We discuss training reward models, benchmarks, and their link to reasoning models\. 

## Categories
- [Uncategorized](https://www.ai21.com/blog/category/uncategorized/)
- [Labs in Front](https://www.ai21.com/blog/category/labs-in-front/)

## Knowledge Hub Categories
- [Foundational LLM](https://www.ai21.com/knowledge_cat/foundational-llm/)
- [Financial Services](https://www.ai21.com/knowledge_cat/financial-services/)
- [AI Agent](https://www.ai21.com/knowledge_cat/ai-agent/)
- [Private AI](https://www.ai21.com/knowledge_cat/private-ai/)
- [Healthcare](https://www.ai21.com/knowledge_cat/healthcare/)

## Glossary Categories
- [Foundational LLM](https://www.ai21.com/glossary/foundational-llm/)
- [Financial Services](https://www.ai21.com/glossary/financial-services/)
- [AI Agent](https://www.ai21.com/glossary/ai-agent/)
- [Healthcare](https://www.ai21.com/glossary/healthcare/)
- [Private AI](https://www.ai21.com/glossary/private-ai/)

## Optional
- [Sitemap index](https://www.ai21.com/sitemap_index.xml)