diff --git a/invokeai/app/invocations/infill.py b/invokeai/app/invocations/infill.py
index e9ab2639de..8d14c0a8fe 100644
--- a/invokeai/app/invocations/infill.py
+++ b/invokeai/app/invocations/infill.py
@@ -9,6 +9,7 @@ from PIL import Image, ImageOps
 from invokeai.app.invocations.fields import ColorField, ImageField
 from invokeai.app.invocations.primitives import ImageOutput
 from invokeai.app.services.shared.invocation_context import InvocationContext
+from invokeai.app.util.download_with_progress import download_with_progress_bar
 from invokeai.app.util.misc import SEED_MAX
 from invokeai.backend.image_util.cv2_inpaint import cv2_inpaint
 from invokeai.backend.image_util.lama import LaMA
@@ -217,6 +218,13 @@ class LaMaInfillInvocation(BaseInvocation, WithMetadata, WithBoard):
     def invoke(self, context: InvocationContext) -> ImageOutput:
         image = context.images.get_pil(self.image.image_name)
 
+        # Downloads the LaMa model if it doesn't already exist
+        download_with_progress_bar(
+            name="LaMa Inpainting Model",
+            url="https://github.com/Sanster/models/releases/download/add_big_lama/big-lama.pt",
+            dest_path=context.config.get().models_path / "core/misc/lama/lama.pt",
+        )
+
         infilled = infill_lama(image.copy())
 
         image_dto = context.images.save(image=infilled)
diff --git a/invokeai/app/invocations/upscale.py b/invokeai/app/invocations/upscale.py
index b6d127118d..77c0be858f 100644
--- a/invokeai/app/invocations/upscale.py
+++ b/invokeai/app/invocations/upscale.py
@@ -11,6 +11,7 @@ from pydantic import ConfigDict
 from invokeai.app.invocations.fields import ImageField
 from invokeai.app.invocations.primitives import ImageOutput
 from invokeai.app.services.shared.invocation_context import InvocationContext
+from invokeai.app.util.download_with_progress import download_with_progress_bar
 from invokeai.backend.image_util.basicsr.rrdbnet_arch import RRDBNet
 from invokeai.backend.image_util.realesrgan.realesrgan import RealESRGAN
 from invokeai.backend.util.devices import choose_torch_device
@@ -27,6 +28,13 @@ ESRGAN_MODELS = Literal[
     "RealESRGAN_x2plus.pth",
 ]
 
+ESRGAN_MODEL_URLS: dict[str, str] = {
+    "RealESRGAN_x4plus.pth": "https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.0/RealESRGAN_x4plus.pth",
+    "RealESRGAN_x4plus_anime_6B.pth": "https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.2.4/RealESRGAN_x4plus_anime_6B.pth",
+    "ESRGAN_SRx4_DF2KOST_official.pth": "https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.1/ESRGAN_SRx4_DF2KOST_official-ff704c30.pth",
+    "RealESRGAN_x2plus.pth": "https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.1/RealESRGAN_x2plus.pth",
+}
+
 if choose_torch_device() == torch.device("mps"):
     from torch import mps
 
@@ -45,7 +53,6 @@ class ESRGANInvocation(BaseInvocation, WithMetadata, WithBoard):
 
     def invoke(self, context: InvocationContext) -> ImageOutput:
         image = context.images.get_pil(self.image.image_name)
-        models_path = context.config.get().models_path
 
         rrdbnet_model = None
         netscale = None
@@ -92,11 +99,16 @@ class ESRGANInvocation(BaseInvocation, WithMetadata, WithBoard):
             context.logger.error(msg)
             raise ValueError(msg)
 
-        esrgan_model_path = Path(f"core/upscaling/realesrgan/{self.model_name}")
+        esrgan_model_path = Path(context.config.get().models_path, f"core/upscaling/realesrgan/{self.model_name}")
+
+        # Downloads the ESRGAN model if it doesn't already exist
+        download_with_progress_bar(
+            name=self.model_name, url=ESRGAN_MODEL_URLS[self.model_name], dest_path=esrgan_model_path
+        )
 
         upscaler = RealESRGAN(
             scale=netscale,
-            model_path=models_path / esrgan_model_path,
+            model_path=esrgan_model_path,
             model=rrdbnet_model,
             half=False,
             tile=self.tile_size,
diff --git a/invokeai/app/util/download_with_progress.py b/invokeai/app/util/download_with_progress.py
new file mode 100644
index 0000000000..97a2abb2f6
--- /dev/null
+++ b/invokeai/app/util/download_with_progress.py
@@ -0,0 +1,51 @@
+from pathlib import Path
+from urllib import request
+
+from tqdm import tqdm
+
+from invokeai.backend.util.logging import InvokeAILogger
+
+
+class ProgressBar:
+    """Simple progress bar for urllib.request.urlretrieve using tqdm."""
+
+    def __init__(self, model_name: str = "file"):
+        self.pbar = None
+        self.name = model_name
+
+    def __call__(self, block_num: int, block_size: int, total_size: int):
+        if not self.pbar:
+            self.pbar = tqdm(
+                desc=self.name,
+                initial=0,
+                unit="iB",
+                unit_scale=True,
+                unit_divisor=1000,
+                total=total_size,
+            )
+        self.pbar.update(block_size)
+
+
+def download_with_progress_bar(name: str, url: str, dest_path: Path) -> bool:
+    """Download a file from a URL to a destination path, with a progress bar.
+    If the file already exists, it will not be downloaded again.
+
+    Exceptions are not caught.
+
+    Args:
+        name (str): Name of the file being downloaded.
+        url (str): URL to download the file from.
+        dest_path (Path): Destination path to save the file to.
+
+    Returns:
+        bool: True if the file was downloaded, False if it already existed.
+    """
+    if dest_path.exists():
+        return False  # already downloaded
+
+    InvokeAILogger.get_logger().info(f"Downloading {name}...")
+
+    dest_path.parent.mkdir(parents=True, exist_ok=True)
+    request.urlretrieve(url, dest_path, ProgressBar(name))
+
+    return True