diff --git a/README.md b/README.md
index 9a0fcd3..de33a53 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,7 @@ response = pinecone_indexer.retrieve_and_generate(
                     vector_store = vectorstore, 
                     query = query, 
                     top_k = "number of sources to retrieve",    # Default is 3
+                    pydantic_parser=True                        # Whether to use Pydantic parsing for the generated response (default is True)
                     rerank_model = "reranking model"            # Default is 'flashrank'  Other models available Docs:https://github.com/AnswerDotAI/rerankers
                     )
 response
diff --git a/src/_google/doc_index.py b/src/_google/doc_index.py
index eb32129..55fffc9 100644
--- a/src/_google/doc_index.py
+++ b/src/_google/doc_index.py
@@ -243,7 +243,7 @@ def initialize_vectorstore(self, index_name: str) -> PineconeVectorStore:
                 model="models/embedding-001", 
                 google_api_key=self.google_api_key
                 )
-        vectorstore = PineconeVectorStore(index, embed, "text")
+        vectorstore = PineconeVectorStore(index=index, index_name=index_name, embedding=embed)
         return vectorstore
 
 
@@ -252,6 +252,7 @@ def retrieve_and_generate(
         query: str, 
         vector_store: str, 
         top_k: int =3, 
+        pydantic_parser: bool = True,
         rerank_model: str = 'flashrank', 
         model_type: Optional[str] = None,
         lang: Optional[str] = None,
@@ -264,6 +265,7 @@ def retrieve_and_generate(
             query (str): The query from the user.
             vector_store (str): The name of the Pinecone index.
             top_k (int, optional): The number of documents to retrieve from the index (default is 3).
+            pydantic_parser (bool, optional): Whether to use Pydantic parsing for the generated response (default is True).
             rerank_model (str, optional): The name or path of the model to use for ranking (default is 'flashrank').
             model_type (str, optional): The type of the model (e.g., 'cross-encoder', 'flashrank', 't5', etc.).
             lang (str, optional): The language for multilingual models.
@@ -275,7 +277,7 @@ def retrieve_and_generate(
         Raises:
             ValueError: If an unsupported model_type is provided.
         """
-        llm = ChatGoogleGenerativeAI(model = Config.default_google_model, google_api_key=self.google_api_key)
+        llm = ChatGoogleGenerativeAI(model = Config.default_google_model, google_api_key=self.google_api_key, temperature=0.7, top_p=0.85, convert_system_message_to_human=True)
         parser = PydanticOutputParser(pydantic_object=QueryResult)
         rag_prompt = PromptTemplate(template = Config.template_str, 
                                     input_variables = ["query", "context"],
@@ -283,23 +285,30 @@ def retrieve_and_generate(
         retriever = vector_store.as_retriever()
         ranker = RerankerConfig.get_ranker(
             rerank_model, 
-            model_type, 
             lang, 
-            api_key
+            api_key,
+            model_type, 
         )
         compressor = ranker.as_langchain_compressor(k=top_k)
         compression_retriever = ContextualCompressionRetriever(
             base_compressor=compressor, 
             base_retriever=retriever
         )
-        
-        rag_chain = (
-            {"context": itemgetter("query")| compression_retriever,
-            "query": itemgetter("query"),
-            }
-            | rag_prompt
-            | llm
-            | parser
-        )
-
-        return rag_chain.invoke({"query": query})
+        if pydantic_parser:
+            rag_chain = (
+                {"context": itemgetter("query")| compression_retriever,
+                "query": itemgetter("query"),
+                }
+                | rag_prompt
+                | llm
+                | parser
+            )
+        else:
+            rag_chain = (
+                {"context": itemgetter("query")| compression_retriever,
+                "query": itemgetter("query"),
+                }
+                | rag_prompt
+                | llm
+            )
+        return rag_chain.invoke({"query": query}).content
diff --git a/src/tests/googleindex_test.py b/src/tests/googleindex_test.py
index 110dddf..774eccb 100644
--- a/src/tests/googleindex_test.py
+++ b/src/tests/googleindex_test.py
@@ -59,19 +59,19 @@ def test_03_initialize_vectorstore(self):
         vectorstore = self.indexer.initialize_vectorstore(self.index_name)
         self.assertIsInstance(vectorstore, PineconeVectorStore)
 
-    # def test_04_retrieve_and_generate(self):
-    #     """
-    #     Test initializing the vector store and assert its type.
-    #     """
-    #     vector_store = self.indexer.initialize_vectorstore(self.index_name)
-    #     response = self.indexer.retrieve_and_generate(
-    #         query = "tell me something from the context texts",
-    #         vector_store = vector_store,
-    #         top_k = 3,
-    #         rerank_model = "t5"
-    #         )
-    #     print(response)
-    #     self.assertIsNotNone(response, "The retriever response should not be None.")
+    def test_04_retrieve_and_generate(self):
+        """
+        Test initializing the vector store and assert its type.
+        """
+        vectorstore = self.indexer.initialize_vectorstore(self.index_name)
+        response = self.indexer.retrieve_and_generate(
+            query = "give a short summary of the introduction",
+            vector_store = vectorstore,
+            top_k = 3,
+            pydantic_parser=False,
+            rerank_model = "flashrank"
+            )
+        self.assertIsNotNone(response, "The retriever response should not be None.")
 
     @patch('sys.stdout', new_callable=StringIO)
     def test_05_delete_index(self, mock_stdout):