How to Keep an AI Character Consistent Across Generations

Generating the same character twice — same face, same look, different pose or scene — is a genuinely harder problem than generating one good image, because most models have no memory between separate generations. Here's the practical approach that actually works.

Generate free

Use a reference photo, not a text description

The single biggest lever is switching to image-to-image with a reference photo of the character, rather than describing them in text each time. The model works from actual image data, which holds face and proportions far more consistently than a prompt trying to redescribe the same person.

Change one variable at a time

When generating a new pose or scene for an existing character, change only that one variable in the prompt and keep the reference photo and the rest of the description identical — changing multiple things at once gives the model more room to drift.

FLUX.1 Kontext for targeted single-element edits

When the goal is changing one specific thing (outfit, background, setting) while keeping the face and everything else exactly consistent, FLUX.1 Kontext's in-context editing is built specifically for that — it understands the existing image well enough to edit around it rather than regenerating from scratch.

How to use it

Generate or upload a clear reference photo of the character you want to keep consistent.
For a new pose or scene, use image-to-image with that reference photo rather than a text-only prompt.
Change only the one variable you actually want different (pose, outfit, setting) and keep the rest identical.
For a single targeted change (just the outfit, just the background), use FLUX.1 Kontext instead of a full regeneration.
Compare the result against the reference photo and adjust the one changed variable if needed.

FAQ

Why does my AI character look different every generation?

Most models have no memory between separate generations — describing the same character in text each time introduces drift. Using a reference photo via image-to-image is the fix.

What is the best model for character consistency?

FLUX.1 Kontext is built specifically for editing one element of an existing image while keeping everything else, including the face, consistent — it's the right tool when you only want to change one thing.

Can I use this for a fictional original character?

Yes — the same reference-photo technique works whether the character started as an AI generation or an original design. Every result must depict a fictional, AI-generated adult character, always shown as an adult.