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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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Stable Audio
A
Suno
S
OpenRouter
S
Rows
A
TaglineStability AI's open audio model. Loops + SFX + background.Prompt to full song with vocals, instruments, the works.One API, every model. Pay-as-you-go, no subscriptions.Spreadsheets with AI + live integrations baked in.
CategoryAudioAudioDev PlatformData
PricingFree + $12/mo Pro + enterpriseFree + $10/mo + $30/moPay per token — model-dependentFree + $19-$89/user/mo
Best forGame developers, podcasters needing SFX, video creators needing background music.Jingles, intros, demos, sketches, personal use.Developers experimenting across models. Apps that want fallback logic.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Not for full songs with vocals
  • Shorter generation limits
  • Copyright gray zone
  • Audio quality behind studio
  • Slight markup over direct API
  • Some provider features not exposed
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictA-tier for its niche. Different use case than Suno — SFX and loops, not songs.S-tier in its category. The first AI music tool I'd actually listen to.S-tier for model-shopping. I use this for every prototype before committing.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
LinkOpen →Open →Open →Open →