Hey, I’m new to Vapi (about 4 days in) and trying to understand the cost bar on my assistant. My assistant uses OpenAI GPT-4o Cluster with Max Tokens = 300 per turn. At the top it shows ~$0.24/min, and when I hover over the blue segment it says GPT cost is 0.16655/min. What assumptions (tokens per minute / speech rate) are you using to calculate that LLM cost per minute? And does my Max Tokens setting affect that estimate at all, or is it just a safety cap for each reply?