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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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Replicate
S
Stable Audio
A
Devin
A
Granola
S
TaglineRun any open-source AI model with an API call.Stability AI's open audio model. Loops + SFX + background.Cognition Labs' autonomous coding engineer.Meeting notes that don't suck. Runs locally, no bot joins.
CategoryDev PlatformAudioAgentsMeetings
PricingPay per second of computeFree + $12/mo Pro + enterprise$500/moFree + $18/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Game developers, podcasters needing SFX, video creators needing background music.Engineering teams offloading tickets. Ops/platform work.Founders, execs, consultants who live in calls.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • No bot in the call — runs on your Mac
  • Strong templates
  • Fast summaries
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Not for full songs with vocals
  • Shorter generation limits
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Mac-only
  • Single-user by design
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier for its niche. Different use case than Suno — SFX and loops, not songs.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier. Category-defining UX. If you take notes in meetings, switch this week.
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