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Groq
S
Fathom
S
Sudowrite
S
Perplexity
S
TaglineThe fastest AI inference in the world. Crazy low latency.Meeting notes, free forever for individuals.AI writing tool built specifically for fiction writers.AI search done right. Cited answers, not chat theater.
CategoryDev PlatformMeetingsWritingResearch
PricingFree tier + pay-as-you-go APIFree for individuals + $15-$29/user/mo teams$19-$59/moFree + $20/mo Pro
Best forDevelopers who need sub-100ms LLM responses.Solo operators, freelancers, small teams on a budget.Novelists, screenwriters, fiction short-form writers.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
  • 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
Weaknesses
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Bot-joining model
  • Team features gated
  • Pricey for casual use
  • Fiction-only focus — not for business writing
  • 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 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.
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