refactor: Remove redundant backup file for model pricing

- Removed litellm/model_prices_and_context_window_backup.json
- Updated get_model_cost_map() to read from single source
- Refactored _load_local_model_cost_map() to support:
  * Package resources (production/pip install)
  * Project root (development)
- Updated CI/CD workflows:
  * .circleci/config.yml: Copy to litellm/ before publishing
  * .github/workflows/simple_pypi_publish.yml: Same approach
  * ci_cd/check_files_match.py: Updated file paths
- Updated test_get_model_file.py to use project root
- Renamed test_get_backup_model_cost_map → test_get_local_model_cost_map

Benefits:
- Eliminates file duplication
- Single source of truth for model pricing
- No need for PRs like #16460 to sync backup files
- Simpler maintenance

The backup was unnecessary because CI copies the file to the package before publishing.

.circleci/config.yml

@@ -2887,9 +2887,9 @@ jobs:
       - checkout
 
       - run:
-          name: Copy model_prices_and_context_window File to model_prices_and_context_window_backup
+          name: Copy model_prices_and_context_window File to litellm package
           command: |
-            cp model_prices_and_context_window.json litellm/model_prices_and_context_window_backup.json
+            cp model_prices_and_context_window.json litellm/model_prices_and_context_window.json
 
       - run:
           name: Checkout code

.github/workflows/simple_pypi_publish.yml

@@ -48,7 +48,7 @@ jobs:
 
       - name: Copy model prices file
         run: |
-          cp model_prices_and_context_window.json litellm/model_prices_and_context_window_backup.json
+          cp model_prices_and_context_window.json litellm/model_prices_and_context_window.json
 
       - name: Build package
         run: |

ci_cd/check_files_match.py

@@ -5,11 +5,11 @@ import shutil
 
 def main(argv=None):
     print(
-        "Comparing model_prices_and_context_window and litellm/model_prices_and_context_window_backup.json files... checking if they match."
+        "Comparing model_prices_and_context_window.json files in root and litellm/ directory... checking if they match."
     )
 
     file1 = "model_prices_and_context_window.json"
-    file2 = "litellm/model_prices_and_context_window_backup.json"
+    file2 = "litellm/model_prices_and_context_window.json"
 
     cmp_result = filecmp.cmp(file1, file2, shallow=False)
 

litellm/litellm_core_utils/get_model_cost_map.py

@@ -9,23 +9,48 @@ export LITELLM_LOCAL_MODEL_COST_MAP=True
 """
 
 import os
+from pathlib import Path
 
 import httpx
 
 
+def _load_local_model_cost_map() -> dict:
+    """Load model cost map from local filesystem.
+
+    Tries to load from:
+    1. Package resources (production, after pip install)
+    2. Project root (development)
+    """
+    import json
+
+    # Try loading from package resources (production)
+    try:
+        import importlib.resources
+        with importlib.resources.open_text(
+            "litellm", "model_prices_and_context_window.json"
+        ) as f:
+            return json.load(f)
+    except (FileNotFoundError, ModuleNotFoundError):
+        pass
+
+    # Try loading from project root (development)
+    try:
+        current_dir = Path(__file__).parent.parent.parent
+        model_cost_map_path = current_dir / "model_prices_and_context_window.json"
+        with open(model_cost_map_path, "r") as f:
+            return json.load(f)
+    except FileNotFoundError:
+        raise FileNotFoundError(
+            "Could not find model_prices_and_context_window.json in package or project root"
+        )
+
+
 def get_model_cost_map(url: str) -> dict:
     if (
         os.getenv("LITELLM_LOCAL_MODEL_COST_MAP", False)
         or os.getenv("LITELLM_LOCAL_MODEL_COST_MAP", False) == "True"
     ):
-        import importlib.resources
-        import json
-
-        with importlib.resources.open_text(
-            "litellm", "model_prices_and_context_window_backup.json"
-        ) as f:
-            content = json.load(f)
-            return content
+        return _load_local_model_cost_map()
 
     try:
         response = httpx.get(
@@ -35,11 +60,4 @@ def get_model_cost_map(url: str) -> dict:
         content = response.json()
         return content
     except Exception:
-        import importlib.resources
-        import json
-
-        with importlib.resources.open_text(
-            "litellm", "model_prices_and_context_window_backup.json"
-        ) as f:
-            content = json.load(f)
-            return content
+        return _load_local_model_cost_map()

tests/local_testing/test_get_model_file.py

@@ -16,10 +16,17 @@ def test_get_model_cost_map():
         pytest.fail(f"An exception occurred: {e}")
 
 
-def test_get_backup_model_cost_map():
-    with importlib.resources.open_text(
-        "litellm", "model_prices_and_context_window_backup.json"
-    ) as f:
-        print("inside backup")
+def test_get_local_model_cost_map():
+    """Test that we can load the local model cost map"""
+    from pathlib import Path
+
+    # Test loading from project root (development scenario)
+    project_root = Path(__file__).parent.parent.parent
+    model_cost_map_path = project_root / "model_prices_and_context_window.json"
+
+    with open(model_cost_map_path, "r") as f:
+        print("inside local model cost map")
         content = json.load(f)
         print("content", content)
+        assert content is not None
+        assert len(content) > 0