ResearchBenchmarksHuman Preference Alignment EvaluationFollow23.64PickScoreOP-GRPO21.643222.161622.6823.1984Apr 5, 2026Evaluation ResultsMethodMethodLinksPickScoreAesthetic ScoreDeQA ScoreImgRwdUniRwdOP-GRPOStep=BestStep=Best2026.0423.646.094.231.313.72Flow-GRPOStep=BestStep=Best2026.0423.326.014.181.263.66OP-GRPOStep=720Step=7202026.0423.275.924.171.223.59Flow-GRPOStep=720Step=7202026.0422.195.444.131.093.43SD3.5-MStep=—Step=—2026.0421.725.314.070.923.29