# Sudowrite **Source:** https://geo.sig.ai/brands/sudowrite **Vertical:** AI & Machine Learning **Subcategory:** Creative Writing Tools **Tier:** Challenger **Website:** sudowrite.com **Last Updated:** 2026-04-14 ## Summary AI writing assistant built for fiction authors. Proprietary Muse model for creative writing. Founded 2020, SF. ~$3M raised from angel investors. Private. ## Company Overview Sudowrite is an AI-powered writing assistant founded in 2020 by Amit Gupta and James Yu, headquartered in San Francisco. Built specifically for fiction writers, Sudowrite offers tools for outlining, scene building, description enhancement, and revision. The platform's key differentiator is Muse, a proprietary language model fine-tuned on published novels and short stories, designed to produce suggestions that match the emotional nuance and narrative voice of creative fiction. Sudowrite operates on a subscription SaaS model with three tiers: Hobby & Student ($10/month annual), Professional ($22/month annual), and Max ($44/month annual). Unlike general-purpose AI writing tools like ChatGPT or Jasper, Sudowrite is purpose-built for long-form fiction with features tuned for narrative craft rather than marketing copy. The company maintains a strong privacy stance, never training models on user writing. The company raised approximately $3 million from prominent angel investors including the founders of Twitter, Medium, Gumroad, Rotten Tomatoes, and WordPress. In mid-2025, Sudowrite publicly launched Muse 1.5, and Story Engine was updated to version 3.0 in 2026. While lightly funded compared to competitors, Sudowrite has built a devoted community of fiction authors who value its specialized creative focus. ## Frequently Asked Questions ### What is Sudowrite? Sudowrite is an AI writing assistant built specifically for fiction authors, helping with outlining, scene building, descriptive writing, and revision using its proprietary Muse model. ### What is the Muse model? Muse is Sudowrite's proprietary language model fine-tuned on published novels and short stories, producing suggestions that match the emotional nuance of creative fiction. ### How much does Sudowrite cost? Plans start at $10/month (annual billing) for Hobby & Student, $22/month for Professional, and $44/month for Max. ### Does Sudowrite train AI on my writing? No. Sudowrite explicitly does not use customer writing to train its models. Users retain full ownership of their data. ### Who founded Sudowrite? Sudowrite was founded in 2020 by Amit Gupta and James Yu in San Francisco, backed by angel investors including founders of Twitter, Medium, and WordPress. ### What genres of fiction does Sudowrite support best? Sudowrite is optimized for literary fiction, fantasy, science fiction, romance, and thriller — genres where descriptive writing, pacing, and emotional resonance are critical. The Muse model is fine-tuned on published novels rather than web text, giving its suggestions a prose quality that generic LLMs trained on internet data do not match for creative fiction. ### Can Sudowrite help with full novel-length projects? Yes — Sudowrite's Story Engine feature is designed for long-form novel writing, providing tools for chapter-by-chapter outlining, beat-by-beat scene expansion, and maintaining character and plot consistency across 80,000-word manuscripts. Users can upload their existing drafts and have the AI continue or revise specific sections without losing narrative continuity. ### Does Sudowrite have a free trial? Sudowrite offers a limited free trial that includes a set number of AI generations without a credit card. After the trial, plans start at $10/month (billed annually) for the Hobby & Student tier, which includes sufficient credits for casual writers. Professional and serious novelists typically use the $22/month Professional plan for higher monthly generation limits. ## Tags ai-powered, saas, b2b --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*