Research

Multi-source research with citations.

deep
Deep research with citations
Perplexity Pro (speed); ChatGPT Deep Research (long reports); Gemini Deep Research (Google ecosystem)
travel
Plan a trip / itinerary
Perplexity Travel (research + verification); ChatGPT (detailed plans)
comparison
Compare products or services
Perplexity (verified specs); Genspark (side-by-side Sparkpages)
verification
Fact-check a claim
Perplexity
legal
Review a contract or legal document
Spellbook
business
Research competitive intelligence on a company
Klue (B2B teams) or Perplexity (individuals/small teams)