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Perplexity Deep Research alternatives, ranked by AI

What ChatGPT, Claude, Gemini & Grok recommend instead of Perplexity Deep Research — on every leaderboard where it competes, with Perplexity Deep Research's own position shown. Re-polled continuously; every ranking links to its full audit trail.

Best deep research API for agents

Perplexity Deep Research ranks #6 of 9
  1. #1OpenAI Deep Research
  2. #2Exa
  3. #3Parallel Task API
  4. #4Perplexity Agent API

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