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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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Coding
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Fathom
S
Windsurf
A
Devin
A
Cursor
S
TaglineMeeting notes, free forever for individuals.Codeium's agentic IDE. Cascade agent + strong free tier.Cognition Labs' autonomous coding engineer.VS Code fork that made AI coding actually work.
CategoryMeetingsCodingAgentsCoding
PricingFree for individuals + $15-$29/user/mo teamsFree + $15/mo Pro$500/moFree + $20/mo Pro + $40/mo Business
Best forSolo operators, freelancers, small teams on a budget.Developers who want Cursor-like power for less money.Engineering teams offloading tickets. Ops/platform work.Developers. Non-developers who want to ship working code.
Strengths
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
Weaknesses
  • Bot-joining model
  • Team features gated
  • Smaller community
  • Model selection more limited
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Can feel overwhelming for non-coders
  • Expensive at scale
Kai's verdictS-tier for solo + free. The best free option, hands down.A-tier. Close second to Cursor. If $5/mo matters, start here.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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