---
title: "consistency · Blog | Once Books"
description: "3 posts tagged “consistency” on the Once Books blog, newest first: The cast and the sets: the art that holds a book together."
source: "https://www.oncebooks.com/blog/tag/consistency"
---

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Topic

# Consistency

3 posts on this topic.

- [31 August 2026 · 6 min read](https://www.oncebooks.com/blog/the-cast-and-the-sets) — The cast and the sets: the art that holds a book together The hero’s face is the famous consistency problem. The friend, the teacher and every classroom are the harder one. Here’s the reference art behind it.
- [18 August 2026 · 5 min read](https://www.oncebooks.com/blog/how-the-consistency-engine-works) — The four locks behind a consistent AI picture book Character consistency across a whole book isn’t a prompt trick. It takes four specific locks, and here’s what each one does and why it matters.
- [17 August 2026 · 4 min read](https://www.oncebooks.com/blog/why-ai-picture-books-drift) — Why AI picture books drift, and how we stop it Image models are stateless, so page four forgets page three. This is why it happens, and how a locked Character Sheet keeps one child recognisable.

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