llms.txt snapshot

# 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 v28.2, this is an llms.txt file, meant for consumption by LLMs.

## Pages
- [Terms of Use](https://www.ai21.com/terms-policies/terms-of-use/)
- [Data Act Addendum](https://www.ai21.com/terms-policies/data-act/)
- [Acceptable Use](https://www.ai21.com/terms-policies/acceptable-use/)
- [Privacy Policy](https://www.ai21.com/terms-policies/privacy-policy/)
- [Blog](https://www.ai21.com/blog/)

## Posts
- [Mind the gap: What separates demo agents from production systems](https://www.ai21.com/blog/mind-the-gap/)
- [Better and cheaper together: Open models explore, frontier models patch](https://www.ai21.com/blog/better-and-cheaper-together-open-models-explore-frontier-models-patch/)
- [Improving Best\-of\-N with Budget\-Aware Execution for SWE Agents](https://www.ai21.com/blog/improving-best-of-n-with-budget-aware-execution-for-swe-agents/)
- [Token spend isn’t going down\. You need more than naive routing to manage it ](https://www.ai21.com/blog/spend-isnt-going-down-what-now/)
- [Tipping the scales: Merging weak agents into a state\-of\-the\-art deep researcher](https://www.ai21.com/blog/merging-weak-agents-into-a-state-of-the-art-deep-researcher/)

## 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 Engineer World's Fair 2026](https://www.ai21.com/events/ai-engineer-worlds-fair-2026/)
- [The Post\-Model Era and what it means for Enterprise AI](https://www.ai21.com/events/the-post-model-era/)
- [AI All the Work \- Ori Goshen's Keynote at RAISE Summit 2025](https://www.ai21.com/events/ai-all-the-work/)
- [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/)

## 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
- [OpenAI Banned Me for Building This](https://www.ai21.com/yaap/openai-banned-me-for-building-this/): MCP wasn't enough, so Corey J\. Gallon wired his agent straight into Chrome\. It could share his browser session, beat CAPTCHAs, even take over mid\-task\. Then OpenAI tried to ban him for it\. Yuval gets the full story: CDP, scraping, outreach automation, and how he talked his way out of the ban\.
- [Your Code Doesn't Need to Be Readable Anymore](https://www.ai21.com/yaap/your-code-doesnt-need-to-be-readable-anymore/): Readable code was always a compromise for humans\. Explainable is the new bar\. Yuval and Geoffrey Huntley talk about why Git is already dead, why frontier intelligence plateaued a year ago, and why the next programming languages get built for agents, not people\.
- [The Model Routing Paradigm That Changed My Mind](https://www.ai21.com/yaap/the-model-routing-paradigm-that-changed-my-mind/): Models are cheap\. Routing them well is not\. Yuval and Tomás break down why naive model routing quietly costs you more, and why it’s really a robotics problem in disguise\.
- [Every Learner Gets Their Own Andrew](https://www.ai21.com/yaap/every-learner-gets-their-own-andrew/): Courses are built for everyone\. That means they're built for no one\. Yuval and Ryan unpack how DeepLearning\.ai is turning online education into a conversation — and why your next teacher might never have had a classroom\.
- [Everything But the Model: Harness Engineering](https://www.ai21.com/yaap/everything-but-the-model-harness-engineering/): No harness, no production\. Yuval and Mike break down what harness engineering actually is, why MCP matters, and how to get your agent out of your laptop and into the world\.

## 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)