Lessons Learned from Previous Release
The original release of Stable Diffusion 3 Medium in June was a less than ideal release. However, the lessons learned from that experience have helped inform and improve the new Stable Diffusion 3.5 updates. According to Hanno Basse, CTO of Stability AI, the company identified that several model and dataset choices made for the Stable Diffusion Large 8B model were not optimal for the smaller-sized Medium model.
"We did thorough analysis of these bottlenecks and innovated further on our architecture and training protocols on the Medium model to provide a better balance between the model size and the output quality," Basse explained. "This experience has allowed us to refine our approach and create a more robust and high-quality model."