diff --git a/comfy/comfy_types/node_typing.py b/comfy/comfy_types/node_typing.py
index 470eb9fdb..363e0e6c8 100644
--- a/comfy/comfy_types/node_typing.py
+++ b/comfy/comfy_types/node_typing.py
@@ -236,6 +236,8 @@ class ComfyNodeABC(ABC):
     """Flags a node as deprecated, indicating to users that they should find alternatives to this node."""
     API_NODE: Optional[bool]
     """Flags a node as an API node. See: https://docs.comfy.org/tutorials/api-nodes/overview."""
+    HELP: Optional[str]
+    """Optional long help text for the node, shown in detailed node documentation panels."""
 
     @classmethod
     @abstractmethod
diff --git a/comfy_api_nodes/nodes_bfl.py b/comfy_api_nodes/nodes_bfl.py
index 509170b34..c8ed17488 100644
--- a/comfy_api_nodes/nodes_bfl.py
+++ b/comfy_api_nodes/nodes_bfl.py
@@ -217,6 +217,48 @@ class FluxProUltraImageNode(ComfyNodeABC):
 
     RETURN_TYPES = (IO.IMAGE,)
     DESCRIPTION = cleandoc(__doc__ or "")  # Handle potential None value
+    HELP = cleandoc(r'''
+        ![ComfyUI Native Flux 1.1 [pro] Ultra Image node](/docs/assets/flux-1-1-pro-ultra-image.jpg)
+
+        The Flux 1.1 [pro] Ultra Image node allows you to generate ultra-high-resolution images through text prompts, directly connecting to Black Forest Labs' latest image generation API.
+
+        This node supports two main usage modes:
+        1. **Text-to-Image**: Generate high-quality images from text prompts (when no image input is used)
+        2. **Image-to-Image**: Combine existing images with prompts to create new images that blend features from both (Remix mode)
+
+        This node supports Ultra mode through API calls, capable of generating images at 4 times the resolution of standard Flux 1.1 [pro] (up to 4MP), without sacrificing prompt adherence, and maintaining super-fast generation times of just 10 seconds. Compared to other high-resolution models, it's more than 2.5 times faster.
+
+        ## Parameter Description
+
+        ### Basic Parameters
+
+        | Parameter         | Type    | Default | Description                                                                                                                                                                                                                      |
+        | ----------------- | ------- | ------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+        | prompt            | String  | ""      | Text description for generating the image                                                                                                                                                                                        |
+        | prompt_upsampling | Boolean | False   | Whether to use prompt upsampling technique to enhance details. When enabled, automatically modifies prompts for more creative generation, but results become non-deterministic (same seed won't produce exactly the same result) |
+        | seed              | Integer | 0       | Random seed value, controls generation randomness                                                                                                                                                                                |
+        | aspect_ratio      | String  | "16:9"  | Width-to-height ratio of the image, must be between 1:4 and 4:1                                                                                                                                                                  |
+        | raw               | Boolean | False   | When set to True, generates less processed, more natural-looking images                                                                                                                                                          |
+
+        ### Optional Parameters 
+
+        | Parameter             | Type  | Default | Description                                                                                                                                               |
+        | --------------------- | ----- | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |
+        | image_prompt          | Image | None    | Optional input, used for Image-to-Image (Remix) mode                                                                                                      |
+        | image_prompt_strength | Float | 0.1     | Active when `image_prompt` is input, adjusts the blend between prompt and image prompt. Higher values make output closer to input image, range is 0.0-1.0 |
+
+        ### Output
+
+        | Output | Type  | Description                            |
+        | ------ | ----- | -------------------------------------- |
+        | IMAGE  | Image | Generated high-resolution image result |
+
+        ## How It Works
+
+        Flux 1.1 [pro] Ultra mode uses optimized deep learning architecture and efficient GPU acceleration technology to achieve high-resolution image generation without sacrificing speed. When a request is sent to the API, the system parses the prompt, applies appropriate parameters, then computes the image in parallel, finally generating and returning the high-resolution result.
+
+        Compared to regular models, Ultra mode particularly focuses on detail preservation and consistency at large scales, ensuring impressive quality even at 4MP high resolution.
+    ''')
     FUNCTION = "api_call"
     API_NODE = True
     CATEGORY = "api node/image/BFL"
diff --git a/docs/assets/flux-1-1-pro-ultra-image.jpg b/docs/assets/flux-1-1-pro-ultra-image.jpg
new file mode 100644
index 000000000..9ce0dc04f
Binary files /dev/null and b/docs/assets/flux-1-1-pro-ultra-image.jpg differ
diff --git a/server.py b/server.py
index cb1c6a8fd..806be12e5 100644
--- a/server.py
+++ b/server.py
@@ -584,6 +584,9 @@ class PromptServer():
 
             if hasattr(obj_class, 'API_NODE'):
                 info['api_node'] = obj_class.API_NODE
+
+            if hasattr(obj_class, 'HELP'):
+                info['help'] = obj_class.HELP
             return info
 
         @routes.get("/object_info")
@@ -746,6 +749,9 @@ class PromptServer():
                 web.static('/templates', workflow_templates_path)
             ])
 
+        # Serve node docs assets from backend
+        docs_assets_path = os.path.abspath(os.path.join(os.path.dirname(__file__), 'docs', 'assets'))
+        self.app.add_routes([web.static('/docs/assets', docs_assets_path)])
         self.app.add_routes([
             web.static('/', self.web_root),
         ])