{ "validation_scope": "Same final latent; decoder only", "reference": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/decoder-product/native-b1.png", "native_size": [ 2048, 2048 ], "crop_xyxy": [ 768, 768, 1280, 1280 ], "heatmap_gain": 8, "metric_definition": { "psnr": "Full-resolution 8-bit RGB MSE, data range 255; null means infinity", "ssim": "scikit-image RGB structural_similarity, channel_axis=-1, data_range=255, default 7x7 window", "mae": "Full-resolution mean absolute 8-bit RGB error" }, "rows": [ { "label": "native-b1", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/decoder-product/native-b1.png", "png_sha256": "63684ef8ae148a35ddef02650c6aa30b4843b47c99b06cec2ea3708ef3fc2293", "pixel_identical": true, "mae_8bit": 0.0, "max_error_8bit": 0, "psnr_db": null, "ssim_rgb": 1.0, "timings": { "decode_s": 2.870773000176996 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "native-b8", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/decoder-product/native-b8.png", "png_sha256": "57a85569ad45d469b191470541e8cfff8d576fed6cc6bb8bd54db16e9bd2d81f", "pixel_identical": false, "mae_8bit": 0.1251803239186605, "max_error_8bit": 4, "psnr_db": 56.9881575908215, "ssim_rgb": 0.9989046120633382, "timings": { "decode_s": 1.9198206248693168 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "compiled-b8", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/decoder-product/compiled-b8.png", "png_sha256": "57a85569ad45d469b191470541e8cfff8d576fed6cc6bb8bd54db16e9bd2d81f", "pixel_identical": false, "mae_8bit": 0.1251803239186605, "max_error_8bit": 4, "psnr_db": 56.9881575908215, "ssim_rgb": 0.9989046120633382, "timings": { "decode_s": 1.5638958329800516 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" }, { "label": "coreml-CPU_AND_GPU", "image": "/Users/devin/Desktop/MiniMax-H3-Image-mlx/comparisons/optimization-v2/decoder-product/coreml-CPU_AND_GPU.png", "png_sha256": "36a7cdad88b12839d1e4cd30384ee60fafffaac52d2ba05e3be409a33a40a50a", "pixel_identical": false, "mae_8bit": 0.2054581642150879, "max_error_8bit": 7, "psnr_db": 54.674052201530415, "ssim_rgb": 0.9983190643001968, "timings": { "decode_s": 1.5556999580003321 }, "steps": [ 0, 1, 2, 3, 4, 5 ], "timing_scope": "Warm decoder only; model loading excluded" } ], "interpretation": "Pixel similarity to the same seeded trajectory, not a measure of prompt adherence or perceptual quality." }