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