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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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Fathom
S
ChatGPT Operator
B
Aider
A
TaglineMeeting notes, free forever for individuals.OpenAI's browser agent. Clicks and types on websites for you.Terminal-based AI pair programmer. Git-aware, model-flexible.
Categorymeetingagentscoding
PricingFree for individuals + $15-$29/user/mo teamsIncluded with ChatGPT Pro $200/moFree (open source) + whatever API you use
Best forSolo operators, freelancers, small teams on a budget.Power users willing to pay $200/mo for a browser bot.Developers who want open-source tooling with full control.
Strengths
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
Weaknesses
  • Bot-joining model
  • Team features gated
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
Kai's verdictS-tier for solo + free. The best free option, hands down.B-tier. Still early. Manus is more flexible for less money.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.
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