AI that makes your writing better. Not AI that writes it for you.

Amazon KDP requires authors to disclose AI-generated content, meaning text created by AI even if you edited it afterward. AI-assisted work, where you wrote the text and used AI for editing, brainstorming, or error checking, does not require disclosure under the same policy. Because Sudowrite’s core workflow produces AI-generated prose, books drafted with it typically fall on the disclosure side of that line. Because BlurbBio never produces prose at all, work done in BlurbBio stays cleanly in AI-assisted territory. If you publish on KDP or plan to, this is worth understanding before you pick a tool.

The engineering effort that generation tools spend on producing text, BlurbBio spends on understanding yours. Story Doctor scans for plot holes and logic gaps. Conflict detection compares every scene against your established canon: character eye colors, timeline order, who knows what and when. Dialogue analysis checks whether your characters actually sound distinct from each other. Pacing and drop-off prediction show where readers are likely to stall. These run across a full 100,000-word manuscript, which is exactly the scale where human memory fails and continuity errors slip through.

Sudowrite is a drafting environment. BlurbBio is the full pipeline: a distraction-free manuscript editor, the Story Bible, a plot outliner with genre templates, the analysis suite, and professional book export that produces print-ready PDF, DOCX, and EPUB files. You can go from blank page to a file you upload to a printer without leaving the platform or paying for a separate formatting tool.

Moving is a twenty-minute job, not a migration project. Export your manuscript from Sudowrite as DOCX and import it into BlurbBio: chapter detection runs automatically, and the Story Bible scanner reads the full text to detect your characters, locations, items, and relationships. Within one scan you have a populated bible and can run Story Doctor on the complete manuscript. Most authors find their first genuine surprise in that first report, a contradiction or dropped thread that survived every read-through, because a system that reads all 100,000 words at once catches what linear rereading cannot.

Your workflow after that is simple: draft in the editor, let the bible update itself, run analysis at the end of a writing block or before sending pages to beta readers, and use the Copilot when you need to think out loud about a plot problem. The AI stays in the passenger seat permanently.

Readers buy authors, not tools, and voice is the one asset generation can dilute. BlurbBio’s hard rule, no prose generation ever, exists to protect it. The AI reads, checks, and challenges, but the rhythm of your sentences stays untouched, which is exactly what you cannot guarantee once a model starts drafting scenes you then smooth over.