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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
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Devin
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Gamma
A
TaglineVS Code fork that made AI coding actually work.Run any open-source AI model with an API call.Cognition Labs' autonomous coding engineer.AI slide decks that don't look AI-generated.
Categorycodingdev platformagentsproductivity
PricingFree + $20/mo Pro + $40/mo BusinessPay per second of compute$500/moFree + $10-$20/mo
Best forDevelopers. Non-developers who want to ship working code.Developers using open-source models (Flux, SDXL, Whisper, etc).Engineering teams offloading tickets. Ops/platform work.Pitch decks, proposals, internal presentations — fast.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Locked into Gamma's format
  • Export quality varies
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for open-source model APIs. The default in this space.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.
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