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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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Taskade
B
Fathom
S
Perplexity
S
TaglineRun any open-source AI model with an API call.AI project management with agents for each team.Meeting notes, free forever for individuals.AI search done right. Cited answers, not chat theater.
Categorydev platformproductivitymeetingresearch
PricingPay per second of computeFree + $8-$20/user/moFree for individuals + $15-$29/user/mo teamsFree + $20/mo Pro
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Small teams wanting AI baked into project management.Solo operators, freelancers, small teams on a budget.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Custom AI agents per project
  • Doc + tasks + kanban in one
  • Affordable for teams
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Feature sprawl
  • AI agents need tuning to be useful
  • Bot-joining model
  • Team features gated
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for open-source model APIs. The default in this space.B-tier. Solid product but crowded market. Try it if Notion AI feels too generic.S-tier for solo + free. The best free option, hands down.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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