stable-diffusion-3-5-large-d9a8f1d3·2 events·first seen Aliases: Stable Diffusion 3.5 Large
DiT-Reward is a new reward modeling approach that repurposes pretrained text-to-image Diffusion Transformers (DiTs) by processing near-clean image latents and aggregating text-conditioned representations across transformer layers. Under matched training data, it outperforms HPSv3 on all four evaluated preference benchmarks, reaching 85.6% on HPDv2 and 77.6% on HPDv3. When used to optimize Stable Diffusion 3.5 Large via Flow-GRPO, it shows clear gains in realism and achieves a 1.65x inference speedup over HPSv3. The work demonstrates that generative DiT representations transfer meaningfully to reward modeling and policy optimization.
Hugging Face's Diffusers library has added support for Stable Diffusion 3.5 Large, Stability AI's latest image generation model. The blog post covers integration details, usage patterns, and how to run the model within the Diffusers ecosystem. This represents a standard tooling integration announcement for a recently released frontier image generation model.