Sonar Deep Research vs GPT-5.5 Pro

Perplexity vs OpenAI — compared on intelligence, speed, and capabilities.

Sonar Deep ResearchGPT-5.5 Pro
Intelligence8898
Speed7845
Sonar Deep Research

Expert-level research model that autonomously performs dozens of web searches, synthesizes sources, and generates comprehensive reports (typically 2–4 minutes per task).

  • ✓ reasoning
  • ✓ temperature
  • ✓ web search
  • ✓ reasoning effort
  • ✓ vision
  • ✓ documents
  • ✓ deep research
GPT-5.5 Pro

Maximum-performance version of GPT-5.5 using more compute to think harder and provide consistently better answers. The most capable and accurate model in the GPT-5.5 family.

  • ✓ reasoning
  • ✓ web search
  • ✓ reasoning effort
  • ✓ vision
  • ✓ documents
Run the same prompt on both, side by side

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