Note: We’ve moved Samplers FAQ to its own page
Seed is just a random number. It is used to help reproduce a result.
You can think about it as the “dna” of an image, but it’s not like rendering just a seed will produce a consistent result. We’re not googling here. A seed is just one component of the prompt that helps anchor or lock a result in, the “stable” of diffusion.
So if you use a /render /seed:123 with the same number five times in a row, you should get similar results back… but don’t forget to also lock the guidance, sampler, and ai model, too.
Here’s a video that explains how to rebuild an internet prompt: