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

# AI Search Overview

> Learn how Cludo AI Chat and AI Summary endpoints deliver generative answers and summaries grounded in your search index, and how to enable them.

## Why AI-powered search?

AI Search combines keyword matching with semantic search to understand query intent, not just exact words. This improves relevance when users phrase things differently than your indexed content.

### Key benefits

* **Semantic understanding**: matches intent, not just keywords
* **AI Chat**: conversational answers with citations
* **AI Summary**: synthesizes search results into a concise summary

## Setting up an AI engine

To enable AI Search on your engine:

<Steps>
  <Step title="Create or edit an engine in MyCludo">
    Log in to [MyCludo](https://my.cludo.com) and go to **Engines**. Create a new engine or edit an existing one.
  </Step>

  <Step title="Enable AI Search">
    Expand the **Advanced options** section and enable **AI Search**. This activates semantic search and enables access to AI Chat and AI Summary features.
  </Step>

  <Step title="Index your content">
    Set up crawlers or push content. AI Search uses the same indexed content as standard search.
  </Step>
</Steps>

<Info>
  All AI features require an AI-enabled engine.
</Info>

## AI capabilities at a glance

| Feature                    | Endpoint                                   | What it does                                                   |
| -------------------------- | ------------------------------------------ | -------------------------------------------------------------- |
| **AI Search**              | [Search](/api-reference/v4/search/search)  | Automatic keyword + semantic ranking on AI-enabled engines     |
| **AI Chat**                | [AI Chat](/api-reference/v4/ai/chat)       | Conversational answers with citations (standard and streaming) |
| **AI Summary**             | [AI Summary](/api-reference/v4/ai/summary) | Synthesize search results into a summary                       |
| **AI Summary (streaming)** | [AI Summary](/api-reference/v4/ai/summary) | Real-time streamed summaries                                   |

## Authentication

AI endpoints support the same authentication schemes as search:

| Scheme              | Use case                                            |
| ------------------- | --------------------------------------------------- |
| **SiteKey**         | Client-side integration (safe to expose in browser) |
| **Basic (API Key)** | Server-side integration                             |

See the [Authentication guide](/authentication) for token format details.