rupeshs/iris-3b-int8-ov

Iris-3B Turbo, OpenVINO INT8

This repo is the Iris-3B Turbo checkpoint converted to OpenVINO IR, with INT8 weights. Iris-3B is a 3B-parameter text-to-image diffusion transformer that works directly on pixels, so there's no VAE. The Turbo checkpoint is distilled to 4 steps with no CFG.

This model can be used with FastSDCPU

Inference uses only openvino, numpy, pillow and tokenizers. It doesn't need PyTorch, transformers or diffusers.

Resolution	1024×1024, batch 1 (fixed at export)
Steps	4 (distilled), no guidance scale, no negative prompt
Prompt length	Up to 295 tokens (Qwen tokenizer)
Time per image	86–97 s on an Intel Core i7-12700 (CPU)
Peak RAM	About 7 GB with low_memory=True, about 14 GB without
Download size	6.9 GB
Tested with	OpenVINO 2026.2.0, Python 3.12, Windows 11