diff --git a/scrapegraphai/graphs/abstract_graph.py b/scrapegraphai/graphs/abstract_graph.py
index 29d0532f..bfc1848f 100644
--- a/scrapegraphai/graphs/abstract_graph.py
+++ b/scrapegraphai/graphs/abstract_graph.py
@@ -63,13 +63,10 @@ class AbstractGraph(ABC):
         self.cache_path = self.config.get("cache_path", False)
         self.browser_base = self.config.get("browser_base")
 
-        # Create the graph
         self.graph = self._create_graph()
         self.final_state = None
         self.execution_info = None
 
-        # Set common configuration parameters
-
         verbose = bool(config and config.get("verbose"))
 
         if verbose:
@@ -87,12 +84,10 @@ class AbstractGraph(ABC):
 
         self.set_common_params(common_params, overwrite=True)
 
-        # set burr config
         self.burr_kwargs = config.get("burr_kwargs", None)
         if self.burr_kwargs is not None:
             self.graph.use_burr = True
             if "app_instance_id" not in self.burr_kwargs:
-                # set a random uuid for the app_instance_id to avoid conflicts
                 self.burr_kwargs["app_instance_id"] = str(uuid.uuid4())
 
             self.graph.burr_config = self.burr_kwargs
@@ -125,7 +120,6 @@ class AbstractGraph(ABC):
         llm_defaults = {"temperature": 0, "streaming": False}
         llm_params = {**llm_defaults, **llm_config}
 
-        # If model instance is passed directly instead of the model details
         if "model_instance" in llm_params:
             try:
                 self.model_token = llm_params["model_tokens"]
@@ -145,18 +139,14 @@ class AbstractGraph(ABC):
                 warnings.simplefilter("ignore")
                 return init_chat_model(**llm_params)
 
-        known_models = ["chatgpt","gpt","openai", "azure_openai", "google_genai",
-                         "ollama", "oneapi", "nvidia", "groq", "google_vertexai", 
-                         "bedrock", "mistralai", "hugging_face", "deepseek", "ernie", "fireworks"]
-
+        known_models = {"chatgpt","gpt","openai", "azure_openai", "google_genai",
+                        "ollama", "oneapi", "nvidia", "groq", "google_vertexai",
+                        "bedrock", "mistralai", "hugging_face", "deepseek", "ernie", "fireworks"}
 
         if llm_params["model"].split("/")[0] not in known_models and llm_params["model"].split("-")[0] not in known_models:
             raise ValueError(f"Model '{llm_params['model']}' is not supported")
 
         try:
-            if "azure" in llm_params["model"]:
-                 model_name = llm_params["model"].split("/")[-1]
-                 return handle_model(model_name, "azure_openai", model_name)	        
             if "fireworks" in llm_params["model"]:
                 model_name = "/".join(llm_params["model"].split("/")[1:])
                 token_key = llm_params["model"].split("/")[-1]
@@ -207,7 +197,6 @@ class AbstractGraph(ABC):
                 return ErnieBotChat(llm_params)
 
             elif "oneapi" in llm_params["model"]:
-                # take the model after the last dash
                 llm_params["model"] = llm_params["model"].split("/")[-1]
                 try:
                     self.model_token = models_tokens["oneapi"][llm_params["model"]]
diff --git a/scrapegraphai/helpers/models_tokens.py b/scrapegraphai/helpers/models_tokens.py
index 852a9ce2..62d46e7b 100644
--- a/scrapegraphai/helpers/models_tokens.py
+++ b/scrapegraphai/helpers/models_tokens.py
@@ -50,6 +50,11 @@ models_tokens = {
         "gemini-1.5-flash-latest": 128000,
         "gemini-1.5-pro-latest": 128000,
         "models/embedding-001": 2048
+    },
+     "google_vertexai": {
+        "gemini-1.5-flash": 128000,
+        "gemini-1.5-pro": 128000,
+        "gemini-1.0-pro": 128000,
     },
     "ollama": {
             "command-r": 12800, 
@@ -96,7 +101,7 @@ models_tokens = {
     "oneapi": {
         "qwen-turbo": 6000,
     },
-    "nv dia": {
+    "nvdia": {
         "meta/llama3-70b-instruct": 419,
         "meta/llama3-8b-instruct": 419,
         "nemotron-4-340b-instruct": 1024,
@@ -132,11 +137,6 @@ models_tokens = {
         "claude-3-haiku-20240307": 200000,
         "claude-3-5-sonnet-20240620": 200000,
     },
-    "google_vertexai": {
-        "gemini-1.5-flash": 128000,
-        "gemini-1.5-pro": 128000,
-        "gemini-1.0-pro": 128000,
-    },
     "bedrock": {
         "anthropic.claude-3-haiku-20240307-v1:0": 200000,
         "anthropic.claude-3-sonnet-20240229-v1:0": 200000,