Understanding the seed and reproducibility

The seed is the starting number the model uses to generate an image. It sits behind every render in Create an image and decides how much a result stays the same or changes between generations.

1. What a seed does

The same prompt combined with the same seed, on the same settings (references, quality, format, style), produces the same image every time. Change the seed and you get a different image from the identical prompt.

2. Automatic by default

The seed is automatic by default: a new one for each render, so pressing Generate repeatedly with the same prompt gives a fresh variation each time. The seed actually used is remembered all the same.

3. Lock a seed to refine

Click the die to fix the seed: it takes the value from your last generation, and you can type another one. Click it again to go back to an automatic seed. With it fixed, adjust the prompt (lighting, outfit, a small detail) and regenerate to see the effect of that change alone.

4. Reproduce an image exactly

To recreate a past result, use the same prompt, the same locked seed and the same settings. The fastest way is from the Gallery: open a past image and click Reuse, it reopens Create an image with the exact prompt, seed, references and style.

Combine seed locking with Images per run to compare several unlocked variations before settling on one to refine. See also the Prompting guide.