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Sonar Reasoning Pro

Sonar Reasoning Pro

By Perplexity
Model family: Sonar
Sonar Reasoning Pro is a high-performance model built on advanced Chain-of-Thought (CoT) reasoning with built-in real-time web search. It targets complex tasks requiring deep multi-step analysis: advanced research, strategic decision-making, and comprehensive information synthesis. The model outputs a think block containing its reasoning tokens followed by its final response, enabling transparency into the reasoning process. Image input is supported, though not in combination with structured outputs. Context window is 128K tokens. Pricing is $2 per 1M input tokens and $8 per 1M output tokens, with additional per-request search context fees. No training on customer data.
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Overview

Advanced reasoning model combining multi-step Chain-of-Thought processing with real-time web search integration. Features a 128K context window. Successor to the deprecated sonar-reasoning model, built for complex problem-solving requiring deep multi-step analysis and live information retrieval.

🔍Research📊Data analysis💬Chatting📝Text generation

Pricing

Source

Compare Sonar Reasoning Pro with other models listed in the same vendor pricing tiers and context lengths.

Sonar API

Token pricing + per-request fee by search context size (Low/Medium/High per 1K requests). Sonar: $5/$8/$12 | Sonar Pro: $6/$10/$14 | Sonar Reasoning Pro: $6/$10/$14. Sonar Deep Research also charges +$2/1M citation tokens, +$3/1M reasoning tokens, +$5/1K search queries.

Model Input Cached input Output Unit
Sonar Perplexity
$1 - $1 per 1M tokens
Sonar Pro Perplexity
$3 - $15 per 1M tokens
Sonar Reasoning Pro This model Perplexity
$2 - $8 per 1M tokens

About Perplexity

Perplexity is a technology company that specializes in artificial intelligence and machine learning solutions.

Industry: Artificial Intelligence
Company Size: 247
Location: San Francisco, California, US
Website: perplexity.ai
View Company Profile

Other models from this family

  • Sonar
    Sonar Pro
    By Perplexity
    Sonar Pro is Perplexity’s balanced reasoning model, sitting between the smaller Sonar options and the top-end Sonar Large. It’s tuned for strong multi-step reasoning, accurate retrieval grounding, and code assistance, with a practical context window for everyday copilots and research agents.
    💻Coding📊Data analysis📝Writing🔍Research
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    Released 1y ago
  • Sonar
    Sonar
    By Perplexity
    Sonar is Perplexity’s family of reasoning models built on the R1 post-training architecture. They’re optimized for retrieval-augmented generation (RAG), accurate instruction following, and structured outputs, with multiple sizes (from Pro to Large 32K) to balance depth, speed, and cost.
    📝Writing💻Coding🤖ChatGPT🔍Research
    Text
    Released 1y ago
  • Sonar
    Sonar Large 32K
    By Perplexity
    Perplexity Sonar Large 32K is the top-tier Sonar reasoning model, built on Perplexity’s R1 post-trained architecture. It supports a 32,000-token context window, excels at deep reasoning and coding, and is tuned for retrieval-augmented generation with precise, grounded answers.
    Text
    Released 2y ago

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Last updated: July 9, 2026
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