diff --git a/gui/main.py b/gui/main.py
index 8510de7..804ec11 100644
--- a/gui/main.py
+++ b/gui/main.py
@@ -18,23 +18,24 @@
 import customtkinter as ctk
 
 from crab import Experiment
-from crab.agents.backend_models import OpenAIModel, ClaudeModel, GeminiModel
+from crab.agents.backend_models import ClaudeModel, GeminiModel, OpenAIModel
 from crab.agents.policies import SingleAgentPolicy
 from gui.utils import get_benchmark
 
 warnings.filterwarnings("ignore")
 
 AVAILABLE_MODELS = {
-    "gpt-4o": ("OpenAIModel", "gpt-4o"),
-    "gpt-4turbo": ("OpenAIModel", "gpt-4-turbo"),
-    "gemini": ("GeminiModel", "gemini-1.5-pro-latest"),
-    "claude": ("ClaudeModel", "claude-3-opus-20240229"),
+    "GPT-4o": ("OpenAIModel", "gpt-4o"),
+    "GPT-4 Turbo": ("OpenAIModel", "gpt-4-turbo"),
+    "Gemini": ("GeminiModel", "gemini-1.5-pro-latest"),
+    "Claude": ("ClaudeModel", "claude-3-opus-20240229"),
 }
 
+
 def get_model_instance(model_key: str):
     if model_key not in AVAILABLE_MODELS:
         raise ValueError(f"Model {model_key} not supported")
-    
+
     model_config = AVAILABLE_MODELS[model_key]
     model_class_name = model_config[0]
     model_name = model_config[1]
@@ -46,12 +47,13 @@ def get_model_instance(model_key: str):
     elif model_class_name == "ClaudeModel":
         return ClaudeModel(model=model_name, history_messages_len=2)
 
+
 def assign_task():
     task_description = input_entry.get()
     input_entry.delete(0, "end")
     display_message(task_description)
 
-    model = get_model_instance(selected_model.get())
+    model = get_model_instance(model_dropdown.get())
     agent_policy = SingleAgentPolicy(model_backend=model)
 
     task_id = str(uuid4())
@@ -80,7 +82,8 @@ def display_message(message, sender="user"):
 
 
 if __name__ == "__main__":
-    # TODO: Handle JSON decode error from environment action endpoint and display model response in GUI
+    # TODO: Handle JSON decode error from environment action endpoint and
+    #  display model response in GUI
     log_dir = (Path(__file__).parent / "logs").resolve()
 
     ctk.set_appearance_mode("System")
@@ -93,15 +96,14 @@ def display_message(message, sender="user"):
     model_frame = ctk.CTkFrame(app)
     model_frame.pack(pady=10, padx=10, fill="x")
 
-    model_label = ctk.CTkLabel(model_frame, text="Select Model:")
+    model_label = ctk.CTkLabel(model_frame, text="Model")
     model_label.pack(side="left", padx=(0, 10))
 
-    selected_model = ctk.StringVar(value="gpt-4o")
     model_dropdown = ctk.CTkOptionMenu(
         model_frame,
         values=list(AVAILABLE_MODELS.keys()),
-        variable=selected_model,
     )
+    model_dropdown.set(next(iter(AVAILABLE_MODELS)))
     model_dropdown.pack(side="left", fill="x", expand=True)
 
     chat_display_frame = ctk.CTkFrame(app, width=380, height=380)