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

# Models

Composo has developed 2 distinct model types that each achieve best in class scoring performance for their respective tasks.

<CardGroup cols={2}>
  <Card title="Composo Align" icon="bullseye">
    **Expert-level Agent evaluation for production confidence**

    * Our flagship model for when accuracy matters most
    * 5-15 second response time
    * Achieves 92% accuracy on real-world evaluation tasks (vs \~70% for LLM-as-judge)
    * Detailed evidence based explanations
    * Optimized for evaluating complex Agentic applications end-to-end
  </Card>

  <Card title="Composo Align Lightning" icon="bolt">
    **Fast evaluation for rapid iteration**

    * 3 second median response time
    * Optimized for development workflows and real-time feedback
    * Ideal for quick iteration during development and testing
  </Card>
</CardGroup>

## Available Model Versions

### Composo Align Versions

| Version          | Context Window | Latency      | Notes                                                                                            |
| ---------------- | -------------- | ------------ | ------------------------------------------------------------------------------------------------ |
| `align-20260109` | 120K tokens    | 5-10 seconds | <Note>Beta. Supports [Context & Knowledge Store](/documentation/getting-started/context).</Note> |
| `align-20251111` | 350K tokens    | 5-10 seconds | Current stable version                                                                           |
| `align-20250529` | 150K tokens    | 5-15 seconds | <Warning>Deprecated - migrate to `align-20251111`</Warning>                                      |

`align-20260109` can ground its evaluations in your own reference documents and example evaluations — see
[Context & Knowledge Store](/documentation/getting-started/context).

### Composo Align Lightning Versions

| Version                    | Context Window | Latency      | Notes                  |
| -------------------------- | -------------- | ------------ | ---------------------- |
| `align-lightning-20251127` | 32K tokens     | 100 - 800 ms | <Note>Beta</Note>      |
| `align-lightning-20250731` | 200K tokens    | 1-5 seconds  | Current stable version |