diff --git a/src/guidellm/benchmark/outputs/html.py b/src/guidellm/benchmark/outputs/html.py
index 34cf71073..ea8aaa8b7 100644
--- a/src/guidellm/benchmark/outputs/html.py
+++ b/src/guidellm/benchmark/outputs/html.py
@@ -20,6 +20,7 @@
 from pathlib import Path
 from typing import Any, ClassVar
 
+import httpx
 from loguru import logger
 from pydantic import BaseModel, Field, computed_field
 
@@ -282,8 +283,15 @@ def _build_run_info(
     """
     model = args.model or "N/A"
     timestamp = max(bm.start_time for bm in benchmarks if bm.start_time is not None)
+    model_size = 0
+    try:
+        response = httpx.get(f"https://huggingface.co/api/models/{model}")
+        model_size = response.json().get("usedStorage", 0)
+    except (httpx.HTTPError, ValueError):
+        logger.warning("Could not find huggingface model with model size")
+
     return {
-        "model": {"name": model, "size": 0},
+        "model": {"name": model, "size": model_size},
         "task": "N/A",
         "timestamp": timestamp,
         "dataset": {"name": "N/A"},
diff --git a/src/ui/lib/components/PageHeader/PageHeader.component.tsx b/src/ui/lib/components/PageHeader/PageHeader.component.tsx
index 683cf837d..f2e0170d7 100644
--- a/src/ui/lib/components/PageHeader/PageHeader.component.tsx
+++ b/src/ui/lib/components/PageHeader/PageHeader.component.tsx
@@ -2,12 +2,14 @@
 import { Box, Typography } from '@mui/material';
 
 import { useGetRunInfoQuery } from '../../store/slices/runInfo';
-import { formateDate } from '../../utils/helpers';
+import { formateDate, getFileSize } from '../../utils/helpers';
 import { SpecBadge } from '../SpecBadge';
 import { HeaderCell, HeaderWrapper } from './PageHeader.styles';
 
 export const Component = () => {
   const { data } = useGetRunInfoQuery();
+  const modelSize = getFileSize(data?.model?.size || 0);
+
   return (
     <Box py={2}>
       <Typography variant="subtitle2" color="surface.onSurfaceAccent">
@@ -24,11 +26,16 @@ export const Component = () => {
             variant="metric2"
             withTooltip
           />
+          <SpecBadge
+            label="Model size"
+            value={data?.model?.size ? `${modelSize?.size} ${modelSize?.units}` : '0B'}
+            variant="body1"
+          />
         </HeaderCell>
         <HeaderCell item xs={2} sx={{ paddingRight: 0 }}>
           <SpecBadge
             label="Time Stamp"
-            value={data?.timestamp ? formateDate(data?.timestamp) : 'n/a'}
+            value={data?.timestamp ? formateDate(data?.timestamp) : 'N/A'}
             variant="caption"
           />
         </HeaderCell>