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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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Claude
S
Replicate
S
Fathom
S
Rows
A
TaglineAnthropic's flagship — best reasoning + longest useful context.Run any open-source AI model with an API call.Meeting notes, free forever for individuals.Spreadsheets with AI + live integrations baked in.
CategoryChatbotsDev PlatformMeetingsData
PricingFree + $20/mo Pro + team/enterprisePay per second of computeFree for individuals + $15-$29/user/mo teamsFree + $19-$89/user/mo
Best forLong writing, code, careful thinking, documents over 50 pages.Developers using open-source models (Flux, SDXL, Whisper, etc).Solo operators, freelancers, small teams on a budget.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Image generation is weak
  • No native web search on all tiers
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Bot-joining model
  • Team features gated
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictS-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.S-tier for open-source model APIs. The default in this space.S-tier for solo + free. The best free option, hands down.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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