How BabyLumi works

What you give us

Two photos of adult faces — usually yours and your partner’s — or a portrait from our catalogue of historical figures. That is all. No DNA, no medical history, no questionnaire.

At checkout you confirm that you are 18 or older and have the right to use the photos, and an automatic check screens uploads for pictures of children and explicit content.

What the AI actually does

Three steps, none of which involves genes.

• A vision model looks at each photo and describes what is visible: eye colour, hair colour and texture, skin tone, face shape.
• A simple textbook-style inheritance model mixes those two descriptions into a plausible combination — the same kind of chart you may remember from school biology, with a little randomness so every run differs.
• An image model paints a child from that description, in the age and style you chose. The picture is drawn from scratch; nothing is “morphed” from your faces.

Why it is a fantasy, not a prediction

Real inheritance involves thousands of genes, and a photo only shows what is visible — not what someone carries. The image model invents a believable face rather than computing a true one: run the same photos twice and you will get two different children.

Treat it the way you would a portrait artist’s guess: charming, sometimes uncannily close, never evidence of anything.

Where your photos live

Uploads and results are stored encrypted in Cloudflare R2 under EU jurisdiction, and are deleted automatically:

• uploads and results — after 30 days;
• we never use your photos to train AI models; the model providers we call see them only to produce your result (see the sub-processor list in the Privacy Policy).

Who can see the result

You, and anyone you send the link to. Result links are private, unguessable and marked as not-for-search-engines. Nothing appears in a public gallery unless you post it there yourself.

What you control

• “Download my data” in the profile menu gives you a zip with every photo, result and record we hold.
• “Delete account” erases photos, generations and videos within a minute. It cannot be undone.
• Anything else: privacy@babylumi.app.