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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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S
Lex
A
Fathom
S
Ideogram
S
TaglineRun any open-source AI model with an API call.Google Docs with an AI collaborator baked in.Meeting notes, free forever for individuals.The one that actually gets text in images right.
Categorydev platformwritingmeetingimage
PricingPay per second of computeFree + $12/moFree for individuals + $15-$29/user/mo teamsFree + $8/mo + $20/mo + $60/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Essays, long-form drafts, thinking on the page.Solo operators, freelancers, small teams on a budget.Anything with text — posters, ads, album covers, slide decks.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Bot-joining model
  • Team features gated
  • Aesthetic ceiling below Midjourney
  • Less style variety
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for solo + free. The best free option, hands down.S-tier for text-in-image. Use this for posters, Midjourney for art.
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