Update QueryMetadataExtractor.py

QueryMetadataExtractor.py

@@ -37,7 +37,7 @@ class QueryMetadataExtractor:
         generator = OpenAIGenerator(
             api_key=Secret.from_env_var("OCTOAI_TOKEN"),
             api_base_url="https://text.octoai.run/v1",
-            model="mistral-7b-instruct",
+            model="mixtral-8x22b-instruct",
             generation_kwargs = {"max_tokens": 512}
         )
         self.pipeline = Pipeline()