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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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OpenRouter
S
Fathom
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Descript
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TaglineRun any open-source AI model with an API call.One API, every model. Pay-as-you-go, no subscriptions.Meeting notes, free forever for individuals.Edit video + podcasts by editing the transcript.
CategoryDev PlatformDev PlatformMeetingsVideo
PricingPay per second of computePay per token — model-dependentFree for individuals + $15-$29/user/mo teamsFree + $16-$50/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers experimenting across models. Apps that want fallback logic.Solo operators, freelancers, small teams on a budget.Podcasters, course creators, anyone editing talking-head content.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Edit audio/video by deleting text
  • Overdub (voice clone) for fixes
  • Strong collaboration + remote recording
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Slight markup over direct API
  • Some provider features not exposed
  • Bot-joining model
  • Team features gated
  • Not a traditional NLE — some workflows awkward
  • Overdub ethics require care
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for model-shopping. I use this for every prototype before committing.S-tier for solo + free. The best free option, hands down.S-tier for content creators. Cuts editing time in half. Non-obvious but life-changing.
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