Diffusers adds Stable Diffusion 3.5 Large with 8B checkpoints and gated access

AI Impact Summary

Diffusers now supports Stable Diffusion 3.5 Large, offering two 8B checkpoints (a standard large model and a timestep-distilled variant) hosted on Hugging Face Hub. Access is gated and requires users to log in before loading the model, which has implications for automation and onboarding in CI/CD pipelines. The release documents memory-optimized workflows (e.g., BitsAndBytes NF4 quantization) and provides guidance for inference, training LoRAs, and single-file transformer loading, expanding deployment options for high-quality image generation. This enables faster, higher-fidelity generation in production, but gated access and substantial VRAM needs mean teams must plan authentication, hardware, and quantization strategies in their rollout.