Sudowrite is an AI-powered writing tool designed specifically for fiction authors, positioning itself as a "non-judgmental AI writing partner." The platform offers a comprehensive suite of features including Story Bible for novel planning (from idea to outline to full chapters), Write for AI-powered autocomplete that matches the author's voice, Describe for vivid sensory descriptions, Expand for pacing adjustments, Rewrite for revision assistance, and Feedback for actionable editorial critique. It also includes brainstorming, visualization for character sheets, a plugin system with 1,000+ extensions, and a chat interface built specifically for novelists.

The tool has garnered endorsements from notable figures including bestselling author Hugh Howey ("Silo"), Emmy-winning screenwriter Bernie Su, and NYT bestselling author Chris Anderson, along with press coverage from The New York Times and The Washington Post. Sudowrite recently launched Muse 1.5, a proprietary AI model built specifically for fiction writing. Founded by writers Amit Gupta and James Yu, the company counts founders of Medium, Twitter, Gumroad, and WordPress among its investors, along with writers and directors of major films. The service starts at $10/month after a free trial with no credit card required.