diff --git a/comfy_extras/v3/nodes_stable_cascade.py b/comfy_extras/v3/nodes_stable_cascade.py
new file mode 100644
index 000000000..36d7e3321
--- /dev/null
+++ b/comfy_extras/v3/nodes_stable_cascade.py
@@ -0,0 +1,143 @@
+"""
+    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 io.NodeOutput({"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 io.NodeOutput({"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(),
+            ],
+        )
+
+    @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 io.NodeOutput(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 io.NodeOutput(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 428b32bea..90d20e6a6 100644
--- a/nodes.py
+++ b/nodes.py
@@ -2303,6 +2303,7 @@ def init_builtin_extra_nodes():
         "v3/nodes_images.py",
         "v3/nodes_mask.py",
         "v3/nodes_webcam.py",
+        "v3/nodes_stable_cascade.py",
     ]
 
     import_failed = []