Sonar Deep Research

Overview

Sonar Deep Research is Perplexity’s most research-focused model, built to gather information from many sources and synthesize long-form, citation-heavy reports. It is designed for exhaustive investigations where breadth and depth matter, such as market research, academic reviews, and due diligence.

Capabilities

• Multi-source retrieval with extensive citation coverage
• Long-context synthesis for large research corpora
• Structured reporting for executive-ready outputs
• Search-grounded responses that prioritize factuality

Strengths

• Strong at exhaustive research and literature reviews
• Produces detailed, organized reports with citations
• Excellent for cross-source synthesis and gap analysis
• Suitable for high-stakes investigative workflows

Limitations and Considerations

• Slower and more expensive than lightweight Sonar models
• Overkill for short questions or simple fact lookups
• Output quality depends on available sources and query framing

Best Use Cases

Sonar Deep Research is ideal for:

• Market research and analysis
• Competitive intelligence
• Academic research assistance
• Due diligence investigations
• Comprehensive topic exploration