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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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S
Groq
S
Suno
S
Lex
A
TaglineAI search done right. Cited answers, not chat theater.The fastest AI inference in the world. Crazy low latency.Prompt to full song with vocals, instruments, the works.Google Docs with an AI collaborator baked in.
CategoryResearchDev PlatformAudioWriting
PricingFree + $20/mo ProFree tier + pay-as-you-go APIFree + $10/mo + $30/moFree + $12/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Developers who need sub-100ms LLM responses.Jingles, intros, demos, sketches, personal use.Essays, long-form drafts, thinking on the page.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Copyright gray zone
  • Audio quality behind studio
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
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 for speed. When latency is the product, start here.S-tier in its category. The first AI music tool I'd actually listen to.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.
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