> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognite.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Cognite Data Fusion (CDF) is an industrial DataOps platform. English is the canonical locale unless the reader asks for another.
> The documentation catalog is https://docs.cognite.com/llms.txt. Subgroup indexes live under https://docs.cognite.com/_llms/. Each published page has a Markdown twin at the same path with a .md suffix.
> REST APIs: calendar version 20230101 is stable. Preview versions are 20230101-beta and 20230101-alpha, for clients already on a preview API. Concept pages are under /api-reference/concepts/<version>/. Versioned requests use the Cdf-Version header. The default SDK is the Python SDK (cognite-sdk). JavaScript and TypeScript projects use the JavaScript SDK.
> Topic hubs: platform overview /cdf/index.md; data modeling /cdf/dm/index.md; data integration /cdf/integration/index.md; access /cdf/access/index.md; Cognite Toolkit /cdf/deploy/cdf_toolkit/index.md; REST quickstart /dev/quickstart.md; Python SDK /dev/sdks/python/index.md; Atlas AI /cdf/atlas_ai/concepts/index.md; Flows apps /cdf/flows/index.md; Aura UI /cdf/aura/index.md; MCP and IDE setup /dev/guides/ide_ai_integration.md.

# Cognite AI

> Overview of Cognite AI APIs in Cognite Data Fusion (CDF), including document understanding, agents, skills, and language models.

Cognite AI APIs group AI capabilities in Cognite Data Fusion. They include **document understanding** (Document AI), **AI agents**, **skills** those agents can load, and OpenAI-compatible **language models** and **chat completions**.

## APIs in this group

* [Document AI](/api-reference/concepts/20230101/document-ai) — Ask natural language questions about documents and generate summaries (large language models over documents in Cognite Data Fusion)
* [AI agents](/api-reference/concepts/20230101-beta/ai-agents) (beta and alpha) — Define, list, chat with, and delete **agents**. Use **AI agents** when you build on agent resources and chat flows.
* [AI skills](/api-reference/concepts/20230101-beta/ai-skills) (beta and alpha) — List, add, upload, download, and delete reusable skills.
* [Language models](/api-reference/concepts/20230101-beta/ai-models) (beta and alpha) — List language models available in a project.
* [Chat completions](/api-reference/concepts/20230101-alpha/ai-chat-completions) (alpha only) — Create chat completions.