diff --git a/.github/workflows/update_test_file_ratings.yml b/.github/workflows/update_test_file_ratings.yml
index e3321663bb..14e1cad664 100644
--- a/.github/workflows/update_test_file_ratings.yml
+++ b/.github/workflows/update_test_file_ratings.yml
@@ -104,3 +104,26 @@ jobs:
           user_email: "test-infra@pytorch.org"
           user_name: "Pytorch Test Infra"
           commit_message: "Updating TD heuristic: historical edited files"
+
+  update-ec2-pricing:
+    runs-on: linux.large
+    steps:
+      - name: Checkout test-infra repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Install Dependencies
+        run: python3 -m pip install boto3==1.19.12 PyYAML==6.0
+
+      - name: Generate EC2 pricing data
+        run: |
+          python3 tools/torchci/test_insights/ec2_pricing.py
+
+      - name: Compress pricing file
+        run: |
+          gzip ec2_pricing.json
+
+      - name: Upload pricing file to S3
+        run: |
+          aws s3 cp ec2_pricing.json.gz s3://ossci-metrics/ec2_pricing.json.gz \
+            --content-encoding gzip \
+            --content-type application/json
diff --git a/tools/torchci/test_insights/ec2_pricing.py b/tools/torchci/test_insights/ec2_pricing.py
new file mode 100644
index 0000000000..7c8c63a128
--- /dev/null
+++ b/tools/torchci/test_insights/ec2_pricing.py
@@ -0,0 +1,115 @@
+#!/usr/bin/env python3
+"""
+EC2 Pricing Map Generator
+
+Get pricing info for EC2 instances by reading .github/scale-config.yml and
+fetching current AWS pricing data.
+"""
+
+import json
+from functools import lru_cache
+from typing import Optional
+
+import requests
+import yaml
+
+
+@lru_cache
+def _get_scale_config() -> dict:
+    """Load scale-config.yml and return as a dictionary."""
+    with open(".github/scale-config.yml", "r") as f:
+        config = yaml.safe_load(f)
+    return config
+
+
+def get_ec2_instance_for_label(label: str) -> dict[str, Optional[str]]:
+    """Get EC2 instance type for a given GitHub Actions runner label from scale-config.yml."""
+    config = _get_scale_config()
+
+    runner_info = config.get("runner_types", {})
+
+    if label in runner_info:
+        return {
+            "ec2_instance": runner_info[label].get("instance_type", None),
+            "os": runner_info[label].get("os", "linux"),
+        }  # Default to linux if not specified
+    return {"ec2_instance": None, "os": None}
+
+
+@lru_cache
+def get_all_pricing_data() -> dict:
+    """Fetch the entire EC2 pricing data from AWS pricing API.  Cached for efficiency."""
+    price_list_url = "https://pricing.us-east-1.amazonaws.com/offers/v1.0/aws/AmazonEC2/current/us-east-1/index.json"
+    response = requests.get(price_list_url)
+    response.raise_for_status()
+    return response.json()
+
+
+@lru_cache
+def get_price_for_ec2_instance(instance_type, os_type="linux") -> Optional[float]:
+    """Fetch on-demand price for EC2 instance type using AWS public pricing data. Returns None if not found."""
+
+    # Map os_type to AWS pricing API values
+    operating_system = "Windows" if os_type.lower() == "windows" else "Linux"
+
+    # Get the cached pricing data
+    pricing_data = get_all_pricing_data()
+
+    # Search through the products to find matching instance
+    for product_sku, product_data in pricing_data.get("products", {}).items():
+        attributes = product_data.get("attributes", {})
+
+        if (
+            attributes.get("instanceType") == instance_type
+            and attributes.get("location") == "US East (N. Virginia)"
+            and attributes.get("operatingSystem") == operating_system
+            and attributes.get("preInstalledSw") == "NA"
+            and attributes.get("tenancy") == "Shared"
+            and attributes.get("usagetype", "").startswith("BoxUsage")
+        ):
+            # Found the product, now get the pricing terms
+            terms = (
+                pricing_data.get("terms", {}).get("OnDemand", {}).get(product_sku, {})
+            )
+
+            for term_data in terms.values():
+                price_dimensions = term_data.get("priceDimensions", {})
+                for price_data in price_dimensions.values():
+                    price_per_unit = price_data.get("pricePerUnit", {}).get("USD")
+                    if price_per_unit:
+                        return float(price_per_unit)
+
+    print(f"No pricing found for {instance_type} ({operating_system})")
+    return None
+
+
+@lru_cache
+def get_price_for_label(label: str) -> Optional[float]:
+    """Get the on-demand price for the EC2 instance type associated with the given GitHub Actions runner label."""
+    instance_info = get_ec2_instance_for_label(label)
+    instance_type = instance_info["ec2_instance"]
+    os_type = instance_info["os"]
+    if instance_type is not None:
+        return get_price_for_ec2_instance(instance_type, os_type)
+    return None
+
+
+if __name__ == "__main__":
+    # Example usage
+    info = []
+    scale_config = _get_scale_config()
+    for runner_label in scale_config.get("runner_types", {}):
+        price = get_price_for_label(runner_label)
+        info.append(
+            {
+                "label": runner_label,
+                "price_per_hour": price,
+                "instance_type": get_ec2_instance_for_label(runner_label)[
+                    "ec2_instance"
+                ],
+            }
+        )
+    with open("ec2_pricing.json", "w") as f:
+        for line in info:
+            json.dump(line, f)
+            f.write("\n")
diff --git a/tools/torchci/test_insights/file_report_generator.py b/tools/torchci/test_insights/file_report_generator.py
index 355e85c0d4..c6f44e6025 100644
--- a/tools/torchci/test_insights/file_report_generator.py
+++ b/tools/torchci/test_insights/file_report_generator.py
@@ -44,6 +44,7 @@
     boto3 = None  # type: ignore[assignment]
 
 from torchci.clickhouse import query_clickhouse
+from torchci.test_insights.ec2_pricing import get_price_for_label
 
 
 logger = logging.getLogger(__name__)
@@ -74,21 +75,6 @@ def __init__(self, dry_run: bool = True):
         """Initialize the generator with the test owners file path"""
         self.dry_run = dry_run
 
-    @lru_cache
-    def load_runner_costs(self) -> Dict[str, float]:
-        """Load runner costs from the S3 endpoint"""
-        logger.debug("Fetching EC2 pricing data from S3...")
-        with urllib.request.urlopen(self.EC2_PRICING_URL) as response:
-            compressed_data = response.read()
-
-        decompressed_data = gzip.decompress(compressed_data)
-        pricing_data = {}
-        for line in decompressed_data.decode("utf-8").splitlines():
-            if line.strip():
-                line_json = json.loads(line)
-                pricing_data[line_json[0]] = float(line_json[2])
-        return pricing_data
-
     @lru_cache
     def load_test_owners(self) -> List[Dict[str, Any]]:
         """Load the test owner labels JSON file from S3"""
@@ -105,10 +91,12 @@ def load_test_owners(self) -> List[Dict[str, Any]]:
 
     def get_runner_cost(self, runner_label: str) -> float:
         """Get the cost per hour for a given runner"""
-        runner_costs = self.load_runner_costs()
         if runner_label.startswith("lf."):
             runner_label = runner_label[3:]
-        return runner_costs.get(runner_label, 0.0)
+        cost = get_price_for_label(runner_label)
+        if cost is None:
+            return 0.0
+        return cost
 
     def _get_first_suitable_sha(self, shas: list[dict[str, Any]]) -> Optional[str]:
         """Get the first suitable SHA from a list of SHAs."""
@@ -282,7 +270,7 @@ def _get_runner_label_from_job_info(self, job_info: Dict[str, Any]) -> str:
         for label in job_labels:
             if label.startswith("lf."):
                 label = label[3:]
-            if label in self.load_runner_costs():
+            if get_price_for_label(label) is not None:
                 return label
 
         return "unknown"