Perplexity AI · Perplexity

Perplexity AI

AI answer engine with real-time web search and citations

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Sonar model family overview

Built for grounded answers, not hallucinations

Perplexity AI is an answer engine that combines a fine-tuned language model with live web search. Every response is grounded in cited sources, giving you fast, verifiable answers to research questions, coding problems, and current-events queries. The Sonar family includes lightweight, Pro, and Reasoning Pro variants, each with three search depth modes.

Key features

  • Real-time web search — every answer is grounded in fresh sources with inline citations.
  • Three Sonar tiers — Sonar, Sonar Pro, and Sonar Reasoning Pro for any complexity level.
  • High/Medium/Low search modes — balance cost, depth and latency on every query.
  • Industry-leading pricing — outperforms larger models at a fraction of the cost.
Featured models

Perplexity AI · AI Models

Pro

Sonar Pro

Advanced search model with 200K context and 2× more search results than Sonar.

Context window 200K Released 2026
Lite

Sonar

Lightweight cost-effective search model with real-time web access.

Context window 128K Released 2026
Reasoning

Sonar Reasoning Pro

High-performance reasoning model using advanced Chain-of-Thought.

Context window 128K Released 2026
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Perplexity AI vs Chatgpt

Perplexity AI vs Chatgpt

Compare with Chatgpt.
Perplexity AI vs Claude

Perplexity AI vs Claude

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Perplexity AI vs Gemini

Perplexity AI vs Gemini

Compare with Gemini.

Try Perplexity AI

Perplexity AI is an answer engine that combines a fine-tuned language model with live web search. Every response is grounded in cited sources, giving you fast, verifiable answers to research questions, coding problems, and current-events queries. The Sonar family includes lightweight, Pro, and Reasoning Pro variants, each with three search depth modes.

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