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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
Fathom
S
Taskade
B
Devin
A
TaglineRun any open-source AI model with an API call.Meeting notes, free forever for individuals.AI project management with agents for each team.Cognition Labs' autonomous coding engineer.
Categorydev platformmeetingproductivityagents
PricingPay per second of computeFree for individuals + $15-$29/user/mo teamsFree + $8-$20/user/mo$500/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Solo operators, freelancers, small teams on a budget.Small teams wanting AI baked into project management.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • 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
  • Custom AI agents per project
  • Doc + tasks + kanban in one
  • Affordable for teams
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Bot-joining model
  • Team features gated
  • Feature sprawl
  • AI agents need tuning to be useful
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for solo + free. The best free option, hands down.B-tier. Solid product but crowded market. Try it if Notion AI feels too generic.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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