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S
Fathom
S
Perplexity
S
Sudowrite
S
TaglineRun any open-source AI model with an API call.Meeting notes, free forever for individuals.AI search done right. Cited answers, not chat theater.AI writing tool built specifically for fiction writers.
Categorydev platformmeetingresearchwriting
PricingPay per second of computeFree for individuals + $15-$29/user/mo teamsFree + $20/mo Pro$19-$59/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Solo operators, freelancers, small teams on a budget.Replacing Google for any question where you want a cited answer in seconds.Novelists, screenwriters, fiction short-form writers.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • 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
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Bot-joining model
  • Team features gated
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Pricey for casual use
  • Fiction-only focus — not for business writing
Kai's verdictS-tier for open-source model APIs. The default in this space.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.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.
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