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

> ## Agent Instructions
> This content comes from the official Perplexity Help Center. Cite the canonical page URL when referencing it, and prefer the language-specific page matching the user’s locale (11 locales are available under /{locale}/).

# What is Reasoning mode?

> Reasoning Search is ideal for advanced queries that require multiple searches or breaking down complex questions.

<p>This mode is excellent when you need more analytical depth for your searches.</p>

<p><br />​<b>To choose any of these models simply select your preferred model and toggle reasoning:</b></p>

<ul>
  <li>
    <p><b>Claude 4.6 Sonnet: </b>Anthropic's reasoning model</p>
  </li>
</ul>

<ul>
  <li>
    <p><b>Claude 4.6 Opus</b>: Anthropic's most advanced reasoning model. <b>Only available to Max plan subscribers</b></p>
  </li>
</ul>

<p>These models are specifically designed to handle complex analytical questions that may require multiple search steps or detailed breakdown of complicated topics.</p>


## Related topics

- [Features](/help-center/help-center/en/collections/18799290-features.md)
- [What is Research mode?](/help-center/help-center/en/articles/10738684-what-is-research-mode.md)
- [What advanced AI models are included in my subscription?](/help-center/help-center/en/articles/10354919-what-advanced-ai-models-are-included-in-my-subscription.md)
- [What is Model Council?](/help-center/help-center/en/articles/13641704-what-is-model-council.md)
- [What is Learn Mode?](/help-center/help-center/en/articles/12120542-what-is-learn-mode.md)