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

# Models

> Choose which AI model powers your Neo tasks

Neo supports a range of frontier models from Anthropic, OpenAI, Google, xAI, and others. You can set a preferred model under **Settings → Models**, and override it per task or per automation.

<Frame>
  <iframe className="w-full aspect-video rounded-xl" src="https://www.youtube.com/embed/qDD2DjhJLgY" title="YouTube video player" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />
</Frame>

The model you choose applies to the primary reasoning agent. Sub-agents in Thorough mode may use different models optimized for their specific role.

## Choosing a model

**Auto** is the default. It selects a cost-effective model with the right intelligence level for each task automatically. For most users, Auto is the right starting point.

If you want direct control, select a specific model. Use the descriptions below to match the model to your use case.

## Available models

### Anthropic

| Model                 | Best for                                   |
| --------------------- | ------------------------------------------ |
| **Claude Opus 4.8**   | Latest and best for complex security tasks |
| **Claude Opus 4.7**   | Latest and best for complex security tasks |
| **Claude Opus 4.6**   | Slightly less capable than Opus 4.7        |
| **Claude Sonnet 4.6** | Latest Sonnet with adaptive thinking       |
| **Claude Haiku 4.5**  | Fast and efficient for quick tasks         |

### OpenAI

| Model                  | Best for                                            |
| ---------------------- | --------------------------------------------------- |
| **GPT-5.5 High**       | High-reasoning GPT model with a 270K context window |
| **GPT-5.4 XHigh**      | Maximum reasoning power for critical analysis       |
| **GPT-5.4 High**       | Strong reasoning for deep security analysis         |
| **GPT-5.3 Codex High** | Advanced security code review and analysis          |

### Google

| Model                | Best for                              |
| -------------------- | ------------------------------------- |
| **Gemini 3.0 Pro**   | Deep research tasks                   |
| **Gemini 3.0 Flash** | Fast and efficient for quick research |

### xAI

| Model             | Best for                                   |
| ----------------- | ------------------------------------------ |
| **Grok 4.3 High** | Frontier reasoning at high effort          |
| **Grok 4.3 Fast** | Same model, low reasoning effort for speed |

### Others

| Model                    | Best for                                      |
| ------------------------ | --------------------------------------------- |
| **Kimi K2.6**            | Most cost-efficient in reasoning              |
| **GLM 5**                | Strong reasoning with large context           |
| **GLM 5.1**              | Z.ai flagship with improved agentic reasoning |
| **DeepSeek V4 Pro High** | Frontier open reasoning at high effort        |

## Overriding the model

You can override the default model for a specific automation in the automation's **Configuration** section. This lets you run different automations on different models without changing your global preference.