The "Her" moment has been promised so many times it's become a joke. Every new demo, every smooth-sounding voice agent gets called it. Neil Zeghidour, CEO of Gradium AI and one of the researchers behind Moshi — the first full-duplex voice model — uses this talk to be honest about where the gap actually is and why it keeps not closing. The core tension: cascaded systems (speech-to-text, LLM, text-to-speech) are practical and getting smarter, but they're architecturally incapable of feeling like a real conver ...