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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
Devin
A
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Suno
S
TaglineVS Code fork that made AI coding actually work.Cognition Labs' autonomous coding engineer.The fastest AI inference in the world. Crazy low latency.Prompt to full song with vocals, instruments, the works.
CategoryCodingAgentsDev PlatformAudio
PricingFree + $20/mo Pro + $40/mo Business$500/moFree tier + pay-as-you-go APIFree + $10/mo + $30/mo
Best forDevelopers. Non-developers who want to ship working code.Engineering teams offloading tickets. Ops/platform work.Developers who need sub-100ms LLM responses.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
  • 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
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • 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 speed. When latency is the product, start here.S-tier in its category. The first AI music tool I'd actually listen to.
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