BIG ENGINE UPDATE: I rewrote a huge part of BookNova's brain this week

Some exciting news first: Anthropic's newest flagship model, Claude Fable 5, finally became available in the European Union - and getting access to it was the push I needed. I spent this entire week going through the whole BookNova generation algorithm with it, line by line, hunting down every weak point that affects book quality. This is the biggest quality update we have shipped this year.

Here is what changed for your books:

1. CONSISTENCY ENGINE OVERHAUL

The number one complaint - details drifting between chapters (ages changing, objects renamed, characters "forgetting" things) - came down to how the story's canon was tracked internally. I found the root cause: the canon was accumulating duplicate entries (the same document tracked under four different names, the same character under two), and the AI had to guess which one was true. That is fixed at the source now. New books track every character, object and location as exactly one entity, deceased characters stay deceased, and the newest books we generated show ZERO continuity warnings across all chapters.

2. CHAPTERS THAT BREATHE

Until now every chapter came out roughly the same length. Real novels do not work that way - a twist chapter is short and punchy, a climax is fuller, an aftermath chapter is quieter. BookNova now plans a pacing beat for every chapter (setup, build, turn, climax, breather) and gives each one its own word budget. Your total book length stays what you ordered - it is just distributed the way real fiction is.

3. SMARTER "AI-TELL" REMOVAL

The banned-phrase system that keeps prose from sounding AI-generated is now built from evidence: we analyze what the writing models actually overuse in each genre and language across real generations, and rebuild the ban lists from that data. All genres are now covered, including the new Horror genre, with more languages added.

4. NOVEL-STANDARD BOOK FORMATTING

Thanks to a great member suggestion: fiction exports (PDF, DOCX, EPUB) now use traditional novel typography - first-line paragraph indents with no gaps between paragraphs, exactly how trade publishers typeset fiction. It is on by default, with an "Indented / Block" choice in the Format step if you prefer the old look. Re-download your files to get it on existing books.

5. FASTER AND MORE STABLE GENERATION

Several planning steps behind the scenes now run 3-5x faster, and the whole pipeline got new self-healing guards - if one AI provider hiccups, your book generation carries on without you ever noticing.

Everything above applies automatically to every book you start from today. No settings to change, nothing to configure.

Huge thanks to everyone who reported issues and sent suggestions - several of these improvements came directly from your tickets. Keep them coming, and go write something great.

Zigmars

Founder, BookNova

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BIG ENGINE UPDATE: I rewrote a huge part of BookNova's brain this week