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Perplexity
S
ChatGPT
S
GitHub Copilot
B
Elicit
S
TaglineAI search done right. Cited answers, not chat theater.The default. Strongest ecosystem + best multimodal breadth.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI research assistant for academic literature.
Categoryresearchchatcodingresearch
PricingFree + $20/mo ProFree + $20/mo Plus + $200/mo ProFree (limited) + $10/mo Pro + $19/mo BusinessFree + $12-$42/mo
Best forReplacing Google for any question where you want a cited answer in seconds.General use, voice chat, image generation, first-time AI users.Teams with GitHub already. Devs who don't want to change IDEs.Grad students, researchers, anyone doing literature reviews.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Great voice mode
  • Huge plugin/custom GPT ecosystem
  • Strong image generation (DALL-E built in)
  • Code Interpreter
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Reasoning quality varies by mode
  • Can be verbose
  • Confabulates on niche facts
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Academic-only
  • Can hallucinate citations — verify everything
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for academic research. Nothing else comes close for systematic reviews.
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