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One cup, with its twin left alone

From Qwen-Image 2.1, run locally

Frame from the The marked input result
The marked inputDownload JPG0.8 MB
Frame from the What came back result
What came backDownload JPG0.9 MB
Output
2528×1696
Change inside vs outside
8 : 1
Steps
40, euler / simple, cfg 1.0
Seed
21
Ran on
RTX 3060, 12GB (local)

The prompt

Change the paper coffee cup in the red circle to a clear glass jar. Do not render the circle in the output.

Notes

The hardest version of this test: a near identical paper cup sits 220 pixels away and was left alone, changing eight times less than the circled one. A prompt naming the cup could not have told them apart.