diff --git a/litellm/cost_calculator.py b/litellm/cost_calculator.py
index 422e340abf5..09700ad6b72 100644
--- a/litellm/cost_calculator.py
+++ b/litellm/cost_calculator.py
@@ -1999,6 +1999,7 @@ def ocr_cost(
     credits: Final = getattr(response.usage_info, "credits", None)
     has_custom_ocr_pricing: Final = model_info is not None and (
         model_info.get("ocr_cost_per_page") is not None
+        or model_info.get("annotation_cost_per_page") is not None
         or (credits is not None and model_info.get("ocr_cost_per_credit") is not None)
     )
     pricing: Final = model_info if has_custom_ocr_pricing else _cost_map_model_info(model, custom_llm_provider)
diff --git a/tests/test_litellm/test_cost_calculator.py b/tests/test_litellm/test_cost_calculator.py
index a0ae9511aff..a05fadce42d 100644
--- a/tests/test_litellm/test_cost_calculator.py
+++ b/tests/test_litellm/test_cost_calculator.py
@@ -4795,6 +4795,24 @@ def test_ocr_cost_uses_deployment_per_page_pricing_for_unmapped_model(pages_proc
     assert cost == pytest.approx(0.004 * pages_processed)
 
 
+def test_ocr_cost_uses_deployment_annotation_only_pricing_for_unmapped_model():
+    from litellm.cost_calculator import ocr_cost
+
+    assert UNMAPPED_OCR_MODEL not in litellm.model_cost
+    response: Final = OCRResponse(
+        pages=[OCRPage(index=index, markdown=f"page {index}") for index in range(3)],
+        model=UNMAPPED_OCR_MODEL,
+        usage_info=OCRUsageInfo(pages_processed=3, pages_processed_annotation=2),
+    )
+    cost, _ = ocr_cost(
+        model=UNMAPPED_OCR_MODEL,
+        custom_llm_provider="azure_ai",
+        response=response,
+        model_info={"annotation_cost_per_page": 0.01},
+    )
+    assert cost == pytest.approx(0.01 * 2)
+
+
 def test_ocr_cost_uses_deployment_per_credit_pricing_for_unmapped_model():
     from litellm.cost_calculator import ocr_cost