ostris · Diffusion Fine-Tuning

AI Toolkit

Ostris's long-running toolkit for fine-tuning and training LoRAs on diffusion models, with a web UI and a self-updating launcher. This week it added FLUX.3 image training with multi-reference sampling and ComfyUI-format weights (15 October), MOSS-Image and MOSS Image Base support including edit-model and SFT edit training (16 October), and first support for fine-tuning and captioning with Qwen 3.8 27B (18 October), along with a patch for a path traversal issue in the captioner. There are no GitHub release tags; the version file reads 0.13.34. MIT, 12,349 stars.