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

# AI Models

> Available AI models and providers in BlackMountain

BlackMountain gives you access to leading AI models from multiple providers. Each model has different strengths in terms of capability, speed, and cost.

## Available Models

### OpenAI

| Model          | Best For                                        |
| -------------- | ----------------------------------------------- |
| **GPT-5.2**    | Most capable OpenAI model for complex reasoning |
| **GPT-5 Mini** | Fast and capable for everyday tasks             |
| **GPT-5 Nano** | Fastest and most cost-effective                 |

### Anthropic

| Model                 | Best For                                      |
| --------------------- | --------------------------------------------- |
| **Claude Opus 4.6**   | Most capable model for nuanced, complex tasks |
| **Claude Sonnet 4.5** | Balanced speed and intelligence               |
| **Claude Haiku 4.5**  | Fast responses for simple tasks               |

### Google

| Model              | Best For                              |
| ------------------ | ------------------------------------- |
| **Gemini 3 Flash** | Fast, efficient responses             |
| **Gemini 3 Pro**   | Advanced reasoning with thinking mode |

### Mistral

| Model                  | Best For                   |
| ---------------------- | -------------------------- |
| **Mistral Large 3**    | Most capable Mistral model |
| **Mistral Medium 3.1** | Balanced performance       |
| **Mistral Small 3.2**  | Fast and lightweight       |

## Switching Models

You can change the model at any time during a conversation using the model selector dropdown above the input field. Each new message will use the currently selected model.

## Setting a Default Model

To set your preferred default model:

1. Open **Settings** from the profile menu.
2. Under **Chat**, select your preferred default model.
3. All new conversations will use this model unless you change it.

## Thinking Mode

Some models (such as Gemini 3 Pro) support a **thinking mode** that shows the model's step-by-step reasoning process. When available, you can toggle thinking mode from the chat input area.