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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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Chatbots
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Perplexity
S
Lex
A
Suno
S
Elicit
S
TaglineAI search done right. Cited answers, not chat theater.Google Docs with an AI collaborator baked in.Prompt to full song with vocals, instruments, the works.AI research assistant for academic literature.
CategoryResearchWritingAudioResearch
PricingFree + $20/mo ProFree + $12/moFree + $10/mo + $30/moFree + $12-$42/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Essays, long-form drafts, thinking on the page.Jingles, intros, demos, sketches, personal use.Grad students, researchers, anyone doing literature reviews.
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
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Copyright gray zone
  • Audio quality behind studio
  • 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.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier in its category. The first AI music tool I'd actually listen to.S-tier for academic research. Nothing else comes close for systematic reviews.
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