From c4a14df9a35336dbfff096683c5015ce726c269d Mon Sep 17 00:00:00 2001
From: Mylo <36931363+gitmylo@users.noreply.github.com>
Date: Wed, 21 Jan 2026 00:46:11 +0100
Subject: [PATCH] Dynamically detect chroma radiance patch size (#11991)

---
 comfy/model_detection.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/comfy/model_detection.py b/comfy/model_detection.py
index 42884f797..dad206a2f 100644
--- a/comfy/model_detection.py
+++ b/comfy/model_detection.py
@@ -253,7 +253,7 @@ def detect_unet_config(state_dict, key_prefix, metadata=None):
                 dit_config["image_model"] = "chroma_radiance"
                 dit_config["in_channels"] = 3
                 dit_config["out_channels"] = 3
-                dit_config["patch_size"] = 16
+                dit_config["patch_size"] = state_dict.get('{}img_in_patch.weight'.format(key_prefix)).size(dim=-1)
                 dit_config["nerf_hidden_size"] = 64
                 dit_config["nerf_mlp_ratio"] = 4
                 dit_config["nerf_depth"] = 4