add mixtral support

app.py

@@ -13,7 +13,7 @@ st.markdown("Paste a transcript on the left and view the generated content plan
 
 # List of available models
 OPENAI_MODELS = ["gpt-4o", "gpt-4o-mini", "o3-mini"]
-GROQ_MODELS = ["llama-3.3-70b-specdec", "llama-3.3-70b-versatile", "llama-3.1-8b-instant"]
+GROQ_MODELS = ["llama-3.3-70b-specdec", "llama-3.3-70b-versatile", "mixtral-8x7b-32768"]
 
 # Sidebar for OpenAI API Key and configuration
 OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")