Low Latency is Key for Voice Agents
AI Engineer · youtube · 2026-07-20
This talk argues that the key to voice agents isn't larger models, but lower latency. The author uses small, fast models in an AI voice tutor because, in voice scenarios, "time to first token" is more critical than benchmark scores.
The core idea is to delegate responsibilities like memory, lesson planning, and next-step decisions to deterministic systems, leaving the model solely responsible for natural language output. In other words, scaffolding isn't just a cost-cutting add-on; it's the prerequisite for making small models viable. The video also emphasizes that if the latency budget hits a "sub-second" threshold, model choices will be forcibly converged by reality.
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