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TaglineAI search done right. Cited answers, not chat theater.Google Docs with an AI collaborator baked in.AI research assistant for academic literature.VS Code fork that made AI coding actually work.
CategoryResearchWritingResearchCoding
PricingFree + $20/mo ProFree + $12/moFree + $12-$42/moFree + $20/mo Pro + $40/mo Business
Best forReplacing Google for any question where you want a cited answer in seconds.Essays, long-form drafts, thinking on the page.Grad students, researchers, anyone doing literature reviews.Developers. Non-developers who want to ship working code.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Academic-only
  • Can hallucinate citations — verify everything
  • Can feel overwhelming for non-coders
  • Expensive at scale
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for academic research. Nothing else comes close for systematic reviews.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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