> ## 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.

# Cognite AI

> AI-powered document understanding in Cognite Data Fusion (CDF).

Cognite AI APIs group AI capabilities in Cognite Data Fusion. They include **document understanding** (Document AI) and **AI agents** you can define, query, and call for conversational or agent-style workflows.

## 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 CDF)
* [AI agents](/api-reference/concepts/20230101-beta/ai-agents) — Define, list, chat with, and delete **agents** via `/ai/agents/...` (preview API references). Use **AI agents** when you build on agent resources and chat flows; use **Document AI** when you need Q\&A and summarization over stored documents.