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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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Sudowrite
S
Fathom
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Groq
S
TaglineAI search done right. Cited answers, not chat theater.AI writing tool built specifically for fiction writers.Meeting notes, free forever for individuals.The fastest AI inference in the world. Crazy low latency.
CategoryResearchWritingMeetingsDev Platform
PricingFree + $20/mo Pro$19-$59/moFree for individuals + $15-$29/user/mo teamsFree tier + pay-as-you-go API
Best forReplacing Google for any question where you want a cited answer in seconds.Novelists, screenwriters, fiction short-form writers.Solo operators, freelancers, small teams on a budget.Developers who need sub-100ms LLM responses.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Pricey for casual use
  • Fiction-only focus — not for business writing
  • Bot-joining model
  • Team features gated
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.S-tier for solo + free. The best free option, hands down.S-tier for speed. When latency is the product, start here.
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