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Sudowrite
S
Groq
S
Cursor
S
Perplexity
S
TaglineAI writing tool built specifically for fiction writers.The fastest AI inference in the world. Crazy low latency.VS Code fork that made AI coding actually work.AI search done right. Cited answers, not chat theater.
CategoryWritingDev PlatformCodingResearch
Pricing$19-$59/moFree tier + pay-as-you-go APIFree + $20/mo Pro + $40/mo BusinessFree + $20/mo Pro
Best forNovelists, screenwriters, fiction short-form writers.Developers who need sub-100ms LLM responses.Developers. Non-developers who want to ship working code.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Pricey for casual use
  • Fiction-only focus — not for business writing
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.S-tier for speed. When latency is the product, start here.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.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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