How do you keep two characters at the right relative size across takes?

Without Higgsfield: Fix both heights in the prompt along with the ratio between them, for example 163 cm and 125 cm with the younger at about 77% of the older's height. A simple pencil height-comparison sketch made from the character sheets also works when fed back in as a visual reference.

Axis: a scale reference image with body landmarks ... size words in the prompt alone

Concept: character sheet

Answers by date: 2 records in 2 sources, newest first; the answers above are the current ones. One answer from each speaker here, so no change can be shown.

date	who	answer	source
2026-10-13	Higgsfield	To keep two characters at the right relative size, Higgsfield's blog fixes both heights in the prompt (163 cm and 125 cm) and the ratio between them, with the younger one about 77% of the older one's height.	How to Put Two Consistent Characters in One AI Video Scene
2026-08-21	Adil	Adil's fix for scale: Claude turns the character sheets into a structured prompt with the hero's head at the giant's mid-thigh, GPT Image renders it as a simple pencil height-comparison sketch, and the sketch goes back in as a visual reference.	How to Make a Wedding Love Story Using AI (Full Tutorial) 00:11:03