Seed
A seed is the number that sets an AI generator's starting randomness — reusing the same seed and prompt reproduces the same result.
Generative models start from random noise; the seed is the number that determines that starting point. Keep the prompt and seed identical and you get the same output every time, which makes results reproducible.
Seeds are how you iterate deliberately: lock a seed you like and tweak the prompt to make small controlled changes, or vary the seed to explore different options from the same prompt.