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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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TaglineRun any open-source AI model with an API call.Design + publish sites with AI assists built in.Meeting notes that don't suck. Runs locally, no bot joins.VS Code fork that made AI coding actually work.
CategoryDev PlatformDesignMeetingsCoding
PricingPay per second of computeFree + $5-$30/moFree + $18/moFree + $20/mo Pro + $40/mo Business
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Designers shipping marketing sites without engineers.Founders, execs, consultants who live in calls.Developers. Non-developers who want to ship working code.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • AI generates sections + copy + layouts
  • Designer-first publishing (not just templates)
  • Great animations
  • No bot in the call — runs on your Mac
  • Strong templates
  • Fast summaries
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Less flexible than raw code
  • Pricing per-site adds up
  • Mac-only
  • Single-user by design
  • Can feel overwhelming for non-coders
  • Expensive at scale
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier for designer-led sites. S-tier if animations matter.S-tier. Category-defining UX. If you take notes in meetings, switch this week.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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