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

# Chat Models

> Available AI models for Devin Desktop Chat including Base Model, Devin Desktop Premier, GPT-4o, and Claude 3.5 Sonnet with different access levels.

While we provide and train our own dedicated models for Chat, we also give you the flexibility choose your favorites.

It's worth noting that the Devin Desktop models are tightly integrated with our reasoning stack, leading to better quality suggestions than external models for coding-specific tasks.

<Frame>
  <img src="https://mintcdn.com/cognitionai/-PTA3zzo2bR9Qfc8/desktop/assets/chat_model_selection.png?fit=max&auto=format&n=-PTA3zzo2bR9Qfc8&q=85&s=8a916f47c544e44cae07ed862abaf924" width="974" height="414" data-path="desktop/assets/chat_model_selection.png" />
</Frame>

Model selection can be found directly under the chat.

## Base Model ⚡

**Access:** All users

Available for unlimited use to all users is a fast, high-quality Devin Desktop Chat model based on Meta's [Llama 3.1 70B](https://ai.meta.com/blog/meta-llama-3-1/).

This model is optimized for speed, and is the **fastest** model available in Devin Desktop Chat. This is all while still being extremely accurate.

## Devin Desktop Premier 🚀

**Access:** Any paying users (Pro, Teams, Enterprise, etc.)

Available in our paid tier is unlimited usage of our premier Devin Desktop Chat model based on Meta's [Llama 3.1 405B](https://ai.meta.com/blog/meta-llama-3-1/).

This is the **highest-performing model** available for use in Devin Desktop, due to its size and integration with Devin Desktop's reasoning engine and native workflows.

## Other Models (GPT-4o, Claude 3.5 Sonnet)

**Access:** Any paying users (Pro, Teams, Enterprise, etc.)

Devin Desktop provides access to OpenAI's and Anthropic's flagship models.