diff --git a/aleph_alpha_client/completion.py b/aleph_alpha_client/completion.py
index 272f7c8..f15813b 100644
--- a/aleph_alpha_client/completion.py
+++ b/aleph_alpha_client/completion.py
@@ -262,11 +262,13 @@ class CompletionResponse:
 
     model_version: str
     completions: Sequence[CompletionResult]
+    num_tokens_prompt_total: int
     optimized_prompt: Optional[Prompt] = None
 
     @staticmethod
     def from_json(json: Dict[str, Any]) -> "CompletionResponse":
         optimized_prompt_json = json.get("optimized_prompt")
+        print(json)
         return CompletionResponse(
             model_version=json["model_version"],
             completions=[
@@ -275,6 +277,7 @@ def from_json(json: Dict[str, Any]) -> "CompletionResponse":
             optimized_prompt=Prompt.from_json(optimized_prompt_json)
             if optimized_prompt_json
             else None,
+            num_tokens_prompt_total=json["num_tokens_prompt_total"],
         )
 
     def to_json(self) -> Mapping[str, Any]:
diff --git a/tests/test_complete.py b/tests/test_complete.py
index 863a9fe..a05b8c4 100644
--- a/tests/test_complete.py
+++ b/tests/test_complete.py
@@ -127,3 +127,18 @@ def test_complete_with_echo(sync_client: Client, model_name: str, prompt_image:
     assert len(completion_result.completion_tokens) > 0
     assert completion_result.log_probs is not None
     assert len(completion_result.log_probs) > 0
+
+@pytest.mark.system_test
+def test_num_tokes_prompt_total_with_best_of(sync_client: Client, model_name: str):
+    tokens = [49222, 2998] # Hello world
+    best_of = 2
+    request = CompletionRequest(
+        prompt= Prompt.from_tokens(tokens),  
+        best_of = best_of,
+        maximum_tokens=1,
+    )
+
+    response = sync_client.complete(request, model=model_name)
+    completion_result = response.completions[0]
+    assert response.num_tokens_prompt_total == len(tokens) * best_of
+