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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
Claude
S
Fathom
S
TaglineStability AI's open audio model. Loops + SFX + background.Anthropic's flagship — best reasoning + longest useful context.Meeting notes, free forever for individuals.
CategoryAudioChatbotsMeetings
PricingFree + $12/mo Pro + enterpriseFree + $20/mo Pro + team/enterpriseFree for individuals + $15-$29/user/mo teams
Best forGame developers, podcasters needing SFX, video creators needing background music.Long writing, code, careful thinking, documents over 50 pages.Solo operators, freelancers, small teams on a budget.
Strengths
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
Weaknesses
  • Not for full songs with vocals
  • Shorter generation limits
  • Image generation is weak
  • No native web search on all tiers
  • Bot-joining model
  • Team features gated
Kai's verdictA-tier for its niche. Different use case than Suno — SFX and loops, not songs.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.S-tier for solo + free. The best free option, hands down.
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