AIStoryHub

AIStoryHub is a web-based fiction writing studio that builds a Voiceprint from a writer's own prose, then drafts and revises chapters in that voice with an agentic assistant named Ash. It starts free and supports bring-your-own API keys.

AIStoryHub is a browser-based writing studio for fiction authors who want AI help without losing their own prose style. The core idea is the Voiceprint, a profile built from the writer's existing text and refined by every edit. Drafts are checked against that profile before they appear, so output aims to read like the author rather than a default model. Work happens in a manuscript editor with a live word count, autosave and version history. A writer sets genre, tone, pacing, point of view, characters and banned words once, and that configuration persists across the project. The assistant, called Ash, can generate a full chapter through Generate PRO, make targeted changes with Revise, or run a Human Grit Pass to roughen machine-sounding prose. Each action snapshots a version that can be reverted. A Style Lab offers custom and premade voice profiles with sliders for pacing, sentence complexity, metaphor density and emotional directness. Ash is more than a chat box. It is aware of characters, continuity and lore through @-references, and its agentic mode can create chapters, update characters, manage world entries and check prose against a list of 758 known AI tells. By default each manuscript change waits behind an approve or deny card, with optional auto-approve. A Story Rules engine adds variables and conditional logic, so a rule can apply only when certain characters share a scene. A public domain gallery covers Sherlock Holmes, Dracula, Pride and Prejudice and The Wonderful Wizard of Oz, with characters and locations already mapped, and any world can be forked into a new story. Writers can start on a built-in free model or connect their own Anthropic, OpenAI, Gemini or OpenRouter key and pay the provider directly. Work exports to TXT, DOCX or ZIP. Compared with general chatbots, it trades breadth for persistent story structure, and it sits closer to manuscript tools than to one-off prompt generators.