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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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Cursor
S
Devin
A
Perplexity
S
Suno
S
TaglineVS Code fork that made AI coding actually work.Cognition Labs' autonomous coding engineer.AI search done right. Cited answers, not chat theater.Prompt to full song with vocals, instruments, the works.
CategoryCodingAgentsResearchAudio
PricingFree + $20/mo Pro + $40/mo Business$500/moFree + $20/mo ProFree + $10/mo + $30/mo
Best forDevelopers. Non-developers who want to ship working code.Engineering teams offloading tickets. Ops/platform work.Replacing Google for any question where you want a cited answer in seconds.Jingles, intros, demos, sketches, personal use.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Copyright gray zone
  • Audio quality behind studio
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier in its category. The first AI music tool I'd actually listen to.
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