diff --git a/comfy_extras/v3/nodes_stable_cascade.py b/comfy_extras/v3/nodes_stable_cascade.py
new file mode 100644
index 000000000..af2893641
--- /dev/null
+++ b/comfy_extras/v3/nodes_stable_cascade.py
@@ -0,0 +1,218 @@
+"""
+    This file is part of ComfyUI.
+    Copyright (C) 2024 Stability AI
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
+import torch
+import nodes
+import comfy.utils
+
+from comfy_api.v3 import io
+
+
+class StableCascade_EmptyLatentImage_V3(io.ComfyNodeV3):
+    @classmethod
+    def DEFINE_SCHEMA(cls):
+        return io.SchemaV3(
+            node_id="StableCascade_EmptyLatentImage_V3",
+            category="latent/stable_cascade",
+            inputs=[
+                io.Int.Input(
+                    "width",
+                    default=1024,
+                    min=256,
+                    max=nodes.MAX_RESOLUTION, step=8,
+                ),
+                io.Int.Input(
+                    "height",
+                    default=1024,
+                    min=256,
+                    max=nodes.MAX_RESOLUTION,
+                    step=8,
+                ),
+                io.Int.Input(
+                    "compression",
+                    default=42,
+                    min=4,
+                    max=128,
+                    step=1,
+                ),
+                io.Int.Input(
+                    "batch_size",
+                    default=1,
+                    min=1,
+                    max=4096,
+                ),
+            ],
+            outputs=[
+                io.Latent.Output(
+                    "stage_c",
+                    display_name="stage_c",
+                ),
+                io.Latent.Output(
+                    "stage_b",
+                    display_name="stage_b",
+                ),
+            ],
+        )
+
+    @classmethod
+    def execute(cls, width, height, compression, batch_size=1):
+        c_latent = torch.zeros([batch_size, 16, height // compression, width // compression])
+        b_latent = torch.zeros([batch_size, 4, height // 4, width // 4])
+        return ({
+            "samples": c_latent,
+        }, {
+            "samples": b_latent,
+        })
+
+
+class StableCascade_StageC_VAEEncode_V3(io.ComfyNodeV3):
+    @classmethod
+    def DEFINE_SCHEMA(cls):
+        return io.SchemaV3(
+            node_id="StableCascade_StageC_VAEEncode_V3",
+            category="latent/stable_cascade",
+            inputs=[
+                io.Image.Input(
+                    "image",
+                ),
+                io.Vae.Input(
+                    "vae",
+                ),
+                io.Int.Input(
+                    "compression",
+                    default=42,
+                    min=4,
+                    max=128,
+                    step=1,
+                ),
+            ],
+            outputs=[
+                io.Latent.Output(
+                    "stage_c",
+                    display_name="stage_c",
+                ),
+                io.Latent.Output(
+                    "stage_b",
+                    display_name="stage_b",
+                ),
+            ],
+        )
+
+    @classmethod
+    def execute(cls, image, vae, compression):
+        width = image.shape[-2]
+        height = image.shape[-3]
+        out_width = (width // compression) * vae.downscale_ratio
+        out_height = (height // compression) * vae.downscale_ratio
+
+        s = comfy.utils.common_upscale(image.movedim(-1,1), out_width, out_height, "bicubic", "center").movedim(1,-1)
+
+        c_latent = vae.encode(s[:,:,:,:3])
+        b_latent = torch.zeros([c_latent.shape[0], 4, (height // 8) * 2, (width // 8) * 2])
+        return ({
+            "samples": c_latent,
+        }, {
+            "samples": b_latent,
+        })
+
+
+class StableCascade_StageB_Conditioning_V3(io.ComfyNodeV3):
+    @classmethod
+    def DEFINE_SCHEMA(cls):
+        return io.SchemaV3(
+            node_id="StableCascade_StageB_Conditioning_V3",
+            category="conditioning/stable_cascade",
+            inputs=[
+                io.Conditioning.Input(
+                    "conditioning",
+                ),
+                io.Latent.Input(
+                    "stage_c",
+                ),
+            ],
+            outputs=[
+              io.Conditioning.Output(
+                  "CONDITIONING",
+              ),
+            ],
+        )
+
+    @classmethod
+    def execute(cls, conditioning, stage_c):
+        c = []
+        for t in conditioning:
+            d = t[1].copy()
+            d['stable_cascade_prior'] = stage_c['samples']
+            n = [t[0], d]
+            c.append(n)
+        return (c, )
+
+
+class StableCascade_SuperResolutionControlnet_V3(io.ComfyNodeV3):
+    @classmethod
+    def DEFINE_SCHEMA(cls):
+        return io.SchemaV3(
+            node_id="StableCascade_SuperResolutionControlnet_V3",
+            category="_for_testing/stable_cascade",
+            is_experimental=True,
+            inputs=[
+                io.Image.Input(
+                    "image",
+                ),
+                io.Vae.Input(
+                    "vae",
+                ),
+            ],
+            outputs=[
+                io.Image.Output(
+                    "controlnet_input",
+                    display_name="controlnet_input",
+                ),
+                io.Latent.Output(
+                    "stage_c",
+                    display_name="stage_c",
+                ),
+                io.Latent.Output(
+                    "stage_b",
+                    display_name="stage_b",
+                ),
+            ],
+        )
+
+    @classmethod
+    def execute(cls, image, vae):
+        width = image.shape[-2]
+        height = image.shape[-3]
+        batch_size = image.shape[0]
+        controlnet_input = vae.encode(image[:,:,:,:3]).movedim(1, -1)
+
+        c_latent = torch.zeros([batch_size, 16, height // 16, width // 16])
+        b_latent = torch.zeros([batch_size, 4, height // 2, width // 2])
+        return (controlnet_input, {
+            "samples": c_latent,
+        }, {
+            "samples": b_latent,
+        })
+
+
+NODES_LIST: list[type[io.ComfyNodeV3]] = [
+    StableCascade_EmptyLatentImage_V3,
+    StableCascade_StageB_Conditioning_V3,
+    StableCascade_StageC_VAEEncode_V3,
+    StableCascade_SuperResolutionControlnet_V3,
+]
diff --git a/nodes.py b/nodes.py
index 4e4dae917..c1806c646 100644
--- a/nodes.py
+++ b/nodes.py
@@ -2302,6 +2302,7 @@ def init_builtin_extra_nodes():
         "v3/nodes_images.py",
         "v3/nodes_mask.py",
         "v3/nodes_webcam.py",
+        "v3/nodes_stable_cascade.py",
     ]
 
     import_failed = []