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

# OCC Legacy Model

> How OCCode's built-in inference model works and when it's used.

## What is the Legacy Model?

The **OCC Legacy Model** (also called ) is the default AI model available to all OCCode users out of the box. It's a capable, cost-efficient model that handles everyday tasks well.

When you sign up for OCCode and start using your agent, this is the model that powers your interactions — no configuration needed.

***

## When is it used?

| Scenario                         | Model used                    |
| -------------------------------- | ----------------------------- |
| New user, no custom keys         | **OCC Legacy** (default)      |
| User with their own API keys     | User's preferred model (BYOK) |
| Fallback when custom model fails | **OCC Legacy** (automatic)    |

***

## Capabilities

The Legacy Model is designed for general-purpose AI tasks:

<CardGroup cols={2}>
  <Card title="Conversations" icon="comments">
    Natural, helpful conversations with context awareness.
  </Card>

  <Card title="Writing" icon="pen">
    Drafting emails, content, summaries, and documents.
  </Card>

  <Card title="Analysis" icon="chart-simple">
    Answering questions about data, documents, and code.
  </Card>

  <Card title="Task execution" icon="list-check">
    Following multi-step instructions and completing tasks.
  </Card>
</CardGroup>

***

## Cost

The Legacy Model is billed from your credit balance:

| Interaction type  | Approximate cost |
| ----------------- | ---------------- |
| Quick question    | \~/bin/bash.001  |
| Moderate task     | \~/bin/bash.003  |
| Long conversation | \~/bin/bash.01   |
| Complex task      | \~/bin/bash.05   |

With  in free credits, you can have thousands of interactions.

***

## Upgrading to your own models

Want to use Claude, GPT, Gemini, or other models? See [Bring Your Own Key](/byok) to configure your own API keys.