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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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Suno
S
Recraft
S
Stable Audio
A
Replicate
S
TaglinePrompt to full song with vocals, instruments, the works.Vector + raster AI for designers. Actually controls the output.Stability AI's open audio model. Loops + SFX + background.Run any open-source AI model with an API call.
CategoryAudioImageAudioDev Platform
PricingFree + $10/mo + $30/moFree + $12-$48/moFree + $12/mo Pro + enterprisePay per second of compute
Best forJingles, intros, demos, sketches, personal use.Designers, brand teams, anyone needing vector output or tight style control.Game developers, podcasters needing SFX, video creators needing background music.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Exports SVG vectors — rare in AI image gen
  • Strong style control + consistency
  • Brand kit for consistent outputs
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Copyright gray zone
  • Audio quality behind studio
  • Less hyped than Midjourney
  • Learning curve for non-designers
  • Not for full songs with vocals
  • Shorter generation limits
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictS-tier in its category. The first AI music tool I'd actually listen to.S-tier for designers. The only one that takes vectors seriously.A-tier for its niche. Different use case than Suno — SFX and loops, not songs.S-tier for open-source model APIs. The default in this space.
LinkOpen →Open →Open →Open →