Sonar Reasoning Pro

Overview

Sonar Reasoning Pro is Perplexity’s highest-end reasoning model, designed for complex analysis that requires explicit reasoning steps and web-grounded answers. It combines large-context processing with search retrieval to provide cited, multi-step explanations for analytical, technical, and research-heavy tasks.

Capabilities

• Chain-of-thought reasoning for transparent analysis
• Search grounding with citations for factual reliability
• Large-context processing for long documents
• Structured outputs for predictable response formats

Strengths

• Excellent for complex analytical and research tasks
• Strong factuality due to citation-based grounding
• Reliable multi-step reasoning across domains
• Suitable for evidence-heavy decision support

Limitations and Considerations

• Higher latency and cost than lighter Sonar models
• Best for complex questions; overkill for simple lookups
• Output quality depends on available sources and query design

Best Use Cases

Sonar Reasoning Pro excels at:

• Complex analytical queries
• Research with fact verification
• Multi-step problem solving
• Evidence-based responses
• Critical thinking tasks