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

# Settings

> Configure how your knowledge base processes and embeds documents.

The **Knowledge Base Settings** tab allows you to configure how your documents are processed and chunked. These settings affect how content is chunked, embedded, and retrieved by your agent.

## Chunking Strategy

Choose how your documents will be divided into chunks for processing.

| Strategy              | Description                                                                                                                                                                    |
| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Sentence Chunking** | Uses a sentence tokenizer for natural language boundaries. Best for general-purpose content where preserving sentence context is important.                                    |
| **Semantic Chunking** | Automatically determines chunk boundaries based on semantic meaning. Best for complex or technical documents where semantic context is more important than sentence structure. |

## Chunk Configuration

Configure chunk size and overlap for sentence-based chunking. This section applies when **Sentence Chunking** is selected.

| Setting           | Default | Recommendation       | Description                                                                                                                                                   |
| ----------------- | ------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Chunk Size**    | 64      | 64–512 tokens        | The maximum size of each chunk. Larger chunks preserve more context but may reduce retrieval precision. Smaller chunks are more precise but may lose context. |
| **Chunk Overlap** | 6       | 10–20% of chunk size | The number of overlapping tokens between adjacent chunks. Helps maintain context across chunk boundaries. Must be non-negative and less than chunk size.      |

## Chunk Enhancement Settings

Configure chunk enrichment and LLM model selection for better content processing.

| Setting              | Description                                                                                    |
| -------------------- | ---------------------------------------------------------------------------------------------- |
| **Chunk Enrichment** | When enabled, uses AI to enhance chunks with additional context for better retrieval accuracy. |
| **LLM Model**        | Select the LLM model to use for chunk enrichment. Required when Chunk Enrichment is enabled.   |

<Note>
  If no Chunk Enrichment models are configured in Super Admin, the default model will be used automatically.
</Note>

<Tip>
  Chunk enrichment improves search quality but increases processing time and computational cost. Enable it for complex content where simple chunking isn't sufficient.
</Tip>

## Danger Zone

<Warning>
  The actions in this section are irreversible. Proceed with caution.
</Warning>

**Delete All Knowledge Base** — Permanently removes all documents, chunks, and embeddings from your knowledge base. This action cannot be undone.

## Saving and Applying Settings

| Action                     | Description                                                                                                                                                |
| -------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Save Settings**          | Saves your configuration. Applies only to new documents added or synced going forward.                                                                     |
| **Reset**                  | Resets the form to the last saved configuration.                                                                                                           |
| **Apply to All Documents** | Re-indexes all existing documents in your knowledge base with the current settings. Use this after saving to apply changes to previously uploaded content. |

<Warning>
  Applying settings to all documents can take significant time depending on the number of documents in your knowledge base. This process cannot be cancelled once started.
</Warning>

## Best Practices

### Chunking Strategy

* **Start with Sentence Chunking** for most use cases.
* **Switch to Semantic Chunking** for complex or technical documents where sentence boundaries don't align with meaningful content divisions.

### Chunk Size

* Start with the default (64) as a baseline.
* Increase for content that requires more context per chunk.
* Decrease when precise, targeted retrieval is more important than context.

### Chunk Overlap

* Keep overlap at 10–20% of your chunk size.
* Increase overlap when critical information may span chunk boundaries.

### Chunk Enrichment

* Enable for complex content where retrieval quality needs improvement.
* Choose a model with strong reasoning capabilities for best results.
* Monitor processing time after enabling — enrichment adds computational cost.