Text-to-Image Generation on Parti-Prompts 1632 prompts (test)
91.9PickScore (PS)UG-FM
Evaluation results
| Method | Links | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| UG-FMSource=Ours, n=1632, Backbone=SD3.5-medium, Sampling Steps=28 step rectified-flow Euler, CFG=7.0, Resolution=1024^2, K_UG=4, η_z=0.1, Prop=full backprop through vθ2026.06 | 91.9 | — | — | 51.7 | 54.2 | — | — | 75.7 | |
| FlowChef (always-on)Source=Compare, n=1632, Backbone=SD3.5-medium, Sampling Steps=28 step rectified-flow Euler, CFG=7.0, Resolution=1024^2, Mechanism=skipping throughout2026.06 | 82.4 | — | — | 49.7 | 53.9 | — | — | 68.1 | |
| FlowChef (gating-matched)Source=Compare, n=1632, Backbone=SD3.5-medium, Sampling Steps=28 step rectified-flow Euler, CFG=7.0, Resolution=1024^2, Mechanism=skipping restricted to UG-FM’s data-side window2026.06 | 75 | — | — | 46.9 | 52.9 | — | — | 62.5 | |
| cPGDBase Model=SPO-SD1.5, Inference Strategy=cPGD2026.02 | 74.8 | 71.9 | 71.3 | 73.9 | 47.5 | 72.9 | 71.7 | — | |
| PGDBase Model=DPO-SD1.5, Inference Strategy=PGD2026.02 | 74.2 | 67.4 | 65 | 63.1 | 55.5 | 62.9 | 66.1 | — | |
| PGDBase Model=SPO-SD1.5, Inference Strategy=PGD2026.02 | 74.2 | 66.5 | 66.2 | 72.2 | 46.7 | 67 | 66.2 | — | |
| cPGDBase Model=DPO-SD1.5, Inference Strategy=cPGD2026.02 | 73.8 | 74.1 | 69.6 | 69 | 59 | 67.3 | 71.6 | — | |
| PGDBase Model=KTO-SD1.5, Inference Strategy=PGD2026.02 | 72.1 | 80.3 | 72.8 | 72.4 | 55.1 | 73.8 | 73.4 | — | |
| SPO-SD1.5Inference Strategy=Baseline2026.02 | 68.6 | 61.2 | 64.2 | 71.9 | 37.7 | 61.6 | 61 | — | |
| PGDBase Model=SD1.5, Inference Strategy=PGD2026.02 | 68 | 65 | 59.6 | 58.1 | 55 | 56.9 | 63.7 | — | |
| DPO-SD1.5Inference Strategy=Baseline2026.02 | 67.3 | 64.8 | 64.5 | 62.2 | 53.6 | 61 | 63.8 | — | |
| KTO-SD1.5Inference Strategy=Baseline2026.02 | 66.6 | 78.3 | 71.9 | 68.8 | 53.3 | 71.3 | 69.9 | — | |
| cPGDBase Model=SD1.5, Inference Strategy=cPGD2026.02 | 66.4 | 76.9 | 68.9 | 68.1 | 58.4 | 71 | 68.8 | — | |
| cPGDBase Model=KTO-SD1.5, Inference Strategy=cPGD2026.02 | 66.2 | 77.1 | 69.5 | 68.4 | 55.9 | 72.2 | 70.6 | — | |
| SD1.5Inference Strategy=Baseline2026.02 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | — | |
| Baseline (reference)Source=-, n=1632, Backbone=SD3.5-medium, Sampling Steps=28 step rectified-flow Euler, CFG=7.0, Resolution=1024^22026.06 | 50 | — | — | 50 | 50 | — | — | 50 |