Onyx Z Image Turbo — 3-bit MLX

• Source: official Tongyi-MAI/Z-Image-Turbo (diffusers), quantized in-house.
• Quantization: 3-bit, group 64, MLX. Only transformer + text-encoder Linear leaves are quantized; norms/embeddings/convs and the whole VAE stay fp16. Components: transformer/, text_encoder/ (Qwen3), vae/ (16-ch FLUX-family), tokenizer/, scheduler/.
• Inference: ~8 steps, CFG off (distilled).
• Verified: reloaded through the Onyx engine and render-checked before publish.