diff --git a/litellm/llms/vertex_httpx.py b/litellm/llms/vertex_httpx.py
index 954a30b801..db61b129b3 100644
--- a/litellm/llms/vertex_httpx.py
+++ b/litellm/llms/vertex_httpx.py
@@ -182,7 +182,12 @@ class GoogleAIStudioGeminiConfig:  # key diff from VertexAI - 'frequency_penalty
             if param == "max_tokens":
                 optional_params["max_output_tokens"] = value
             if param == "response_format" and value["type"] == "json_object":  # type: ignore
-                optional_params["response_mime_type"] = "application/json"
+                if value["type"] == "json_object":  # type: ignore
+                    optional_params["response_mime_type"] = "application/json"
+                elif value["type"] == "text":  # type: ignore
+                    optional_params["response_mime_type"] = "text/plain"
+                if "response_schema" in value:  # type: ignore
+                    optional_params["response_schema"] = value["response_schema"]  # type: ignore
             if param == "tools" and isinstance(value, list):
                 gtool_func_declarations = []
                 for tool in value:
diff --git a/litellm/tests/test_amazing_vertex_completion.py b/litellm/tests/test_amazing_vertex_completion.py
index f0b243c36e..4338d63ba6 100644
--- a/litellm/tests/test_amazing_vertex_completion.py
+++ b/litellm/tests/test_amazing_vertex_completion.py
@@ -903,10 +903,10 @@ from litellm.tests.test_completion import response_format_tests
 @pytest.mark.parametrize(
     "model",
     [
-        # "vertex_ai/mistral-large@2407",
-        # "vertex_ai/mistral-nemo@2407",
+        "vertex_ai/mistral-large@2407",
+        "vertex_ai/mistral-nemo@2407",
         "vertex_ai/codestral@2405",
-        # "vertex_ai/meta/llama3-405b-instruct-maas",
+        "vertex_ai/meta/llama3-405b-instruct-maas",
     ],  #
 )  # "vertex_ai",
 @pytest.mark.parametrize(
@@ -1347,6 +1347,7 @@ def vertex_httpx_mock_post_invalid_schema_response_anthropic(*args, **kwargs):
     "model, vertex_location, supports_response_schema",
     [
         ("vertex_ai_beta/gemini-1.5-pro-001", "us-central1", True),
+        ("gemini/gemini-1.5-pro", None, True),
         ("vertex_ai_beta/gemini-1.5-flash", "us-central1", False),
         ("vertex_ai/claude-3-5-sonnet@20240620", "us-east5", False),
     ],