Seedream 5.5’s 100-round stability claim describes what ByteDance says the model is designed to do; the number alone is not a measurement of image drift. Image drift means unwanted changes to parts of an image that an edit did not target. Whether those areas stay consistent over repeated edits matters if you plan to build on the same image many times.
What the 100-round claim means
ByteDance Seed’s announcement headline frames Seedream 5.5 as supporting stable editing across 100 rounds. That states the scope of the claim, but the round count alone does not tell you how much unedited regions change from one round to the next.
A localized edit and a stable edit chain are different things. Changing a selected area demonstrates an editing operation; judging drift across many rounds means tracking what happens to areas outside the requested change as the edits accumulate.
Treat “100 rounds” as a claim about the editing goal, not as a drift measurement on its own.
What the Magnific tutorial demonstrates
On Magnific, the tutorial shows an editor marking an area and entering a prompt for a targeted change. It also demonstrates adding reference images to introduce objects and editing text on a poster. These examples make the workflow concrete, but they concern operations on Magnific’s platform rather than a quantified measure of cumulative drift.
Reference images and layers in Runware’s listing
Runware’s Seedream 5.5 listing describes up to 10 input images and a decomposition into a base image plus up to 99 editable layers. It also describes text-layer details such as position, font and style. Those are features listed by Runware; they do not measure whether untouched parts remain stable through repeated edits.
What a drift measurement would need to show
To evaluate stability across an edit chain, a test would need to identify the starting image and sequence of edits, define which areas should remain unchanged, and report how those areas differ after each round. That would let a reader distinguish an editing workflow from a measured result.
