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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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Groq
S
Fathom
S
Manus
S
Perplexity
S
TaglineThe fastest AI inference in the world. Crazy low latency.Meeting notes, free forever for individuals.Autonomous AI agent that actually finishes tasks.AI search done right. Cited answers, not chat theater.
CategoryDev PlatformMeetingsAgentsResearch
PricingFree tier + pay-as-you-go APIFree for individuals + $15-$29/user/mo teamsFree tier + $39-$199/moFree + $20/mo Pro
Best forDevelopers who need sub-100ms LLM responses.Solo operators, freelancers, small teams on a budget.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Bot-joining model
  • Team features gated
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for speed. When latency is the product, start here.S-tier for solo + free. The best free option, hands down.S-tier in the agent category. The first one I'd give to a non-technical friend.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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