We are working on an AI-powered booking system and want to create an AI calling agent for both inbound and outbound calls. We are looking for the best Text-to-Speech (TTS) and Language Learning Models (LLM) that ensure a seamless experience, making it impossible for customers to distinguish between an AI agent and a real person. We’ll be integrating N8N for automation, so we need TTS and Speech-to-Text (STT) solutions that are highly natural and fluent. The goal is to ensure that when the AI agent talks, it feels completely natural and human-like, without the customer realizing they’re interacting with an AI. If anyone has recommendations or experiences with models that can deliver this level of quality, feel free to share!"