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

# Perplexity Models

> Search-centric LLMs that provide real-time, citation-backed answers by blending advanced reasoning with live web data.

Perplexity’s Sonar models are designed for factual accuracy and up-to-the-minute information retrieval. They act as "answer engines" that scan the live internet to ground their responses in reality. These models are available to use without any configuration.

<AccordionGroup>
  <Accordion title="Sonar Deep Research" defaultOpen={false}>
    An agentic research model designed to autonomously conduct exhaustive, multi-step investigations and generate comprehensive reports.

    **Use Cases:**

    * Deep competitor analysis and market landscape reports
    * Academic literature reviews and scientific synthesis
    * Due diligence for investments or legal cases

    **Highlights:**

    * Autonomously plans and executes hundreds of web searches
    * Synthesizes findings into long-form, structured reports
    * Continuously refines its search strategy based on gathered data
  </Accordion>

  <Accordion title="Sonar Reasoning Pro" defaultOpen={false}>
    A premier reasoning model (powered by DeepSeek R1) that utilizes Chain-of-Thought (CoT) processing alongside real-time search.

    **Use Cases:**

    * Solving complex technical problems with live documentation
    * Fact-checking trending news or controversial topics
    * Analyzing data that requires both deep logic and external validation

    **Highlights:**

    * Displays its step-by-step thinking process
    * 128K context window for analyzing multiple web sources
    * Significantly more citations per response than standard search models
  </Accordion>

  <Accordion title="Sonar Reasoning" defaultOpen={false}>
    A faster, more efficient version of the reasoning model that maintains logical integrity while providing rapid search results.

    **Use Cases:**

    * Rapid debugging of code using the latest library updates
    * Comparative analysis of products or services in real-time
    * Interactive learning where logic and facts must be balanced

    **Highlights:**

    * Lower latency than the "Pro" version while keeping CoT logic
    * High factual accuracy with a focus on unbiased reporting
    * Ideal for conversational agents that need to explain "why"
  </Accordion>

  <Accordion title="r1-1776" defaultOpen={false}>
    An uncensored, "freedom-focused" variant of DeepSeek R1, post-trained by Perplexity to provide unrestricted and unbiased information.

    **Use Cases:**

    * Researching sensitive geopolitical or historical topics
    * Analysis in media and journalism without regional filtering
    * Policy and government analysis requiring raw, unfiltered data

    **Highlights:**

    * Specifically post-trained to remove regional censorship constraints
    * Maintains the high reasoning and math skills of the base R1 model
    * Designed for transparency and the free flow of information
  </Accordion>

  <Accordion title="Sonar Pro" defaultOpen={false}>
    The flagship high-capacity search model, optimized for deeper context and more comprehensive retrieval.

    **Use Cases:**

    * Professional research assistants and knowledge management
    * Complex travel or event planning with real-time availability
    * Detailed trend analysis for marketing and sales teams

    **Highlights:**

    * Massive 200K context window
    * Accesses 2x more search results than the base model
    * Supporting tools like JSON Mode for structured search data
  </Accordion>

  <Accordion title="Sonar" defaultOpen={false}>
    A lightweight, blazing-fast search model optimized for cost-effective, real-time Q\&A.

    **Use Cases:**

    * Everyday factual lookups (dates, definitions, stats)
    * Lightweight customer support bots with web access
    * Instant summarization of news or recent articles

    **Highlights:**

    * Lowest latency and most affordable search-enabled model
    * 127K context window for handling moderate document history
    * Excellent for high-volume, real-time interaction
  </Accordion>
</AccordionGroup>

> 🔍 **Pro Tip:** If your agent needs to provide **source links** or **citations** for everything it says, Perplexity Sonar models are the best choice.