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Europe 2026

Voice AI: when is the \"Her\" moment? — Neil Zeghidour, CEO, Gradium AI

Neil Zeghidour

Overview

The talk explores the current state of voice AI and the challenges in achieving a "Her moment," where AI voices are indistinguishable from humans and seamlessly integrated into conversations. While significant progress has been made in speech-to-text and text-to-speech, true conversational fluency, low latency, and the ability to handle complex tool calls remain major hurdles. The presentation contrasts cascaded systems with end-to-end speech-to-speech models, highlighting the limitations of current half-duplex speech-to-speech models in replicating human conversational nuances like overlapping speech and backchanneling.

Who should watch

Key takeaways

Notable quotes

*The last mile is going to be the most difficult to solve, and for us, it's really about science and engineering.*
*Voice is very challenging. The last mile is going to be the most difficult to solve.*

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Unofficial community note. Prefer the recording for nuance.