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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
Gemini
A
Replicate
S
TaglineStability AI's open audio model. Loops + SFX + background.Google's answer. Best integrated with Workspace + free for a lot.Run any open-source AI model with an API call.
CategoryAudioChatbotsDev Platform
PricingFree + $12/mo Pro + enterpriseFree + $20/mo Advanced (bundled with 2TB Drive)Pay per second of compute
Best forGame developers, podcasters needing SFX, video creators needing background music.Anyone already on Google, research tasks, summarizing long documents.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Not for full songs with vocals
  • Shorter generation limits
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier for its niche. Different use case than Suno — SFX and loops, not songs.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.S-tier for open-source model APIs. The default in this space.
LinkOpen →Open →Open →