i think they add their commissions to the final cost of using llm /tts etc. if you are not using your own API. Anyway, what is the lowest price per min you guys achieved with good perfomance of ai assistant with complex prompts? Adding cost of vapi and twilio is pretty high for me, around 37 cents/min. Have you met any hallucinations or AI not following the script using 4o mini? To my experience, 4o is a perfect model right now in terms of perfomance / cost