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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
OpenRouter
S
Claude Code
S
DeepSeek
S
TaglineStability AI's open audio model. Loops + SFX + background.One API, every model. Pay-as-you-go, no subscriptions.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.
CategoryAudioDev PlatformCodingChatbots
PricingFree + $12/mo Pro + enterprisePay per token — model-dependentPart of Claude Pro/Max/Team plansFree web + ultra-cheap API (~$0.14/M input tokens)
Best forGame developers, podcasters needing SFX, video creators needing background music.Developers experimenting across models. Apps that want fallback logic.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Developers + cost-conscious builders. Anyone fine with self-hosting.
Strengths
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
Weaknesses
  • Not for full songs with vocals
  • Shorter generation limits
  • Slight markup over direct API
  • Some provider features not exposed
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
Kai's verdictA-tier for its niche. Different use case than Suno — SFX and loops, not songs.S-tier for model-shopping. I use this for every prototype before committing.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.
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