Sudowrite
Sudowrite is an AI-powered writing platform built for fiction writers, offering proprietary Muse and Ballad models, persistent Story Bible memory, and writing tools like Write, Describe, and Expand. It serves 30,000+ paying novelists through tiered subscriptions and a remote-first team of fewer than 20 people.
- Company typePrivate
- Founded2020
- HeadquartersSan Francisco, United States
- Headcount1–10
- GTM typeB2C
- OfferingSoftware
What Sudowrite does
Sudowrite is an AI-powered writing platform built specifically for fiction writers, founded in 2020 by Amit Gupta and James Yu — both serial entrepreneurs who created the product from their own fiction-writing needs before ChatGPT existed. The platform combines two proprietary in-house AI models (Muse, fine-tuned on published novels, and Ballad 1.1, powering Excellent Prose Mode) with middleware orchestration across 20+ third-party models (GPT-5, Claude Opus 4.7, Gemini 3.1 Pro, DeepSeek V3) via proprietary prompt templates. Core product architecture centers on the Story Bible persistent memory system that catalogs characters, worldbuilding, and style guides across long manuscripts and multi-book series, paired with a suite of writing tools (Write, Describe, Expand, Rewrite, Brainstorm, Canvas, Visualize, Chat, Feedback, Draft, Plugins) and a custom editor built on TipTap with Y.js real-time collaboration.
The company monetizes through tiered subscriptions: Hobby ($10-19/month), Professional ($22/month, 1M credits), and Max ($44-59/month, 2M credits with rollover), plus an Enterprise tier ($129/month) with unlimited credits and API access, and pay-as-you-go API pricing at $15 per 1 million input tokens. Distribution is product-led and self-serve via sudowrite.com, editor.sudowrite.com, and mobile apps on iOS/Android (React Native via Expo), with growth driven by word of mouth, content marketing (200+ blog articles), a Discord community, free live classes, and earned media coverage in The New York Times and The New Yorker. The company is remote-first with 9 full-time staff and 10 contractors, has been profitable for 4 consecutive years without venture capital funding, and serves 30,000+ paying writers who have produced over 20 billion words on the platform. The only disclosed outside capital is a November 2021 strategic seed round from founders of Medium, Twitter, Gumroad, Rotten Tomatoes, and WordPress plus entertainment industry professionals.
Sudowrite firmographics
Firmographics- Name
- Sudowrite
- Legal name
- Sudowrite
- Website
- https://sudowrite.com
- Company type
- Private
- Founded year
- 2020
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Sudowrite is an AI-powered writing platform built for fiction writers, offering proprietary Muse and Ballad models, persistent Story Bible memory, and writing tools like Write, Describe, and Expand. It serves 30,000+ paying novelists through tiered subscriptions and a remote-first team of fewer than 20 people.
- Ownership category
- akta.pro rank
Sudowrite industry classification
Industry- Product category
- AI Fiction Writing Software
- NAICS
- Software Publishers (513210), Book Publishers (513130)
- SIC
- Services-Prepackaged Software (7372), Books: Publishing Or Publishing & Printing (2731)
- akta.pro primary industry
- Self-Publishing & Author Platforms (BPAMAJAF)
- akta.pro secondary industries
- Editorial & Production Services (Copyediting, Proofreading, Formatting, Typesetting) (MPAJAJAG), Ghostwriting & Collaborative Writing Services (MPAJAJAI)
Keywords
Where Sudowrite is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Sudowrite business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Technology or R&D, Infrastructure, Personnel, Marketing or Sales, Operations
Revenue model
- Subscription Plans: Tiered subscription model (Hobby, Professional, Max) with monthly or annual billing. Includes monthly credit allocation with rollover options on higher tiers. Additional credits can be purchased separately and don't expire.
- Enterprise API Access: Enterprise tier at $129/month for unlimited credits with API access. Pay-as-you-go API pricing at $15 per 1 million input tokens for developers integrating Sudowrite capabilities.
- Credit Purchases: Additional credits can be purchased independently of monthly allocation. Purchased credits do not expire and remain available until fully expended.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Hobby plan for casual writers |
| Subscription | Monthly | Hobbyist tier with basic features |
| Subscription | Annual | Professional plan for serious writers |
| Subscription | Monthly | Professional tier with expanded capabilities |
| Subscription | Annual | Max plan for prolific authors |
| Subscription | Monthly | Max tier with maximum credits |
| Subscription | Monthly | Enterprise with unlimited access |
| Usage-based | Pay-as-you-go | Pay-as-you-go API pricing |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels8 records
Sudowrite product offering
Product offeringCore offering
Sudowrite is a subscription-based AI writing platform built specifically for fiction authors, combining its proprietary Muse large language model with an integrated editor, persistent Story Bible memory, and a suite of writing features (Write, Describe, Expand, Rewrite, Brainstorm, Canvas, Chat, Feedback, Draft) that help novelists draft, expand, revise, and maintain continuity across long manuscripts and multi-book series. Customers subscribe to tiered monthly or annual plans and consume credits to access Sudowrite's in-house Muse and Ballad models as well as third-party LLMs such as Claude, GPT, and Gemini.
Product overview
Sudowrite is an AI-powered writing platform built specifically for fiction writers, consisting of a proprietary Muse model for prose generation combined with integrated writing tools including Story Bible (persistent project memory), Write/Describe/Expand/Rewrite (revision workflow), Brainstorm/Canvas (planning), Chat/Feedback (editorial assistance), and Draft (chapter generation). The platform offers tiered subscription plans from $10-44/month with credit-based access to 20+ AI models including Muse, GPT-5, Claude family, and Gemini. Free tools include Story Generator, Story Plot Generator, and Book Outline Generator. An Enterprise plan provides API access at $129/month.
Differentiator
Problem solved
Functional benefit
Brands
- Muse: Proprietary AI model specifically designed for fiction writing, developed by writers, engineers, designers, and specialists. Produces evocative, inventive prose avoiding clichéd language while maintaining consistency with authors' existing style guides and story bibles.
- Muse 1.5
- Story Bible
- Story Engine
- Ballad
- Ballad 1.1
Products and services
- Sudowrite Writing Platform
- Sudowrite Mobile App
- Sudowrite Enterprise API
- Free Story Generator
- Story Plot Generator
- Book Outline Generator
Quantifiable outcome
- 92% of users finish manuscripts faster using specialized fiction AI tools
- +8 more outcomes
Companies that use Sudowrite
Customer profileNamed customers9 records
Segments4 records
Ideal customer profiles3 records
Sudowrite technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration2 records
AI capability6 records
Feature12 records
Sudowrite partnerships and signals
Strategic signalScale indicators12 records
Recent moves8 records
Expansion highlights6 records
Sudowrite competitors and assessment
Company assessmentDirect peers
- Plottr: Plotting and outlining tool for novelists, complementing Sudowrite's Canvas and Brainstorm features. Direct competitor in the pre-draft story planning stage of fiction writing.
- ShortlyAI: AI writing assistant originally focused on fiction and creative writing, with commands like /rewrite, /shorten, /expand that closely mirror Sudowrite's Write, Expand, and Rewrite features.
- Atticus: Writing and formatting tool for indie authors, focused on producing print-ready and e-book outputs. Direct competitor for self-publishing novelists, overlapping with Sudowrite on the author-tooling side.
- ProWritingAid: Premium grammar, style, and editing assistant used by fiction authors. Competes with Sudowrite's Rewrite and Feedback features on the editing and revision side of the writing workflow.
- Scrivener: Long-established writing software for novelists with strong project organization for long manuscripts. Sudowrite even offers Scrivener import functionality. Adjacent competitor in fiction writers' toolset, though without AI features.
- NovelAI: Direct competitor offering AI-assisted fiction and storytelling with custom-trained models and a similar subscription-based credit system. Closest analog in product positioning, audience (fiction writers), and pricing model.
- Novelcrafter: AI fiction writing platform that emphasizes a 'Codex' for project memory and continuity, conceptually similar to Sudowrite's Story Bible. Direct competitor targeting novelists with multi-book series workflows.
Others
- Claude (Anthropic): Foundation model provider whose models Sudowrite integrates. Also a substitute for fiction writers who may use Claude directly with custom system prompts, representing a potential bypass of Sudowrite's value-add.
Broad incumbents
- Jasper: Established AI writing platform originally focused on marketing content but expanding into longer-form and creative use cases. Larger, VC-funded broad incumbent now encroaching on creative writing territory.
- Grammarly: Broad incumbent in AI-assisted writing, now expanding into generative features and tone/style guidance. Overlaps with Sudowrite on revision and prose quality but is not purpose-built for fiction.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Sudowrite social profiles
Digital presenceSudowrite financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sudowrite leadership team
Management profileNumber of profiles
Profiles3 records
Sudowrite funding detail
Funding detailFunding overview
Funding rounds1 record
Investors3 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sudowrite M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sudowrite
What does Sudowrite do?
Sudowrite is a subscription-based AI writing platform built specifically for fiction authors, combining its proprietary Muse large language model with an integrated editor, persistent Story Bible memory, and a suite of writing features (Write, Describe, Expand, Rewrite, Brainstorm, Canvas, Chat, Feedback, Draft) that help novelists draft, expand, revise, and maintain continuity across long manuscripts and multi-book series. Customers subscribe to tiered monthly or annual plans and consume credits to access Sudowrite's in-house Muse and Ballad models as well as third-party LLMs such as Claude, GPT, and Gemini.
Is Sudowrite a public or private company?
Sudowrite is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Sudowrite founded?
Sudowrite was founded in 2020. It employs 1 to 10 people.
Where is Sudowrite based?
Sudowrite is headquartered in San Francisco, United States, in the North America region.
How does Sudowrite make money?
Three revenue lines are on record. Subscription Plans are the primary driver. The others are enterprise API Access and credit Purchases.
Who are Sudowrite's main competitors?
Direct peers on record are Plottr, ShortlyAI, Atticus, ProWritingAid, Scrivener, NovelAI and Novelcrafter. Claude (Anthropic) is listed as an others. Broad incumbents are Jasper and Grammarly.
Does Sudowrite have an API?
Yes. Sudowrite offers API access for enterprise customers. The Enterprise plan at $129/month includes unlimited credits with API access. A pay-as-you-go API option is available at $15 per 1 million input tokens.
What industry is Sudowrite in?
Sudowrite's product category is AI Fiction Writing Software. Its primary akta.pro industry code is BPAMAJAF, Self-Publishing & Author Platforms, with a secondary code of MPAJAJAG, Editorial & Production Services (Copyediting, Proofreading, Formatting, Typesetting). Its NAICS code is 513210 and its SIC code is 7372.