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Posted on Originally published at aitechconnect.in

The Two-Model Voice Agent: Full-Duplex Front End, Reasoning Back End

Originally published on AI Tech Connect.

What this architecture actually buys you Our guide to realtime voice agents, latency budgets and barge-in answers one version of this problem: the caller speaks, the stack thinks, the agent replies, and your job is making that round trip fast enough that nobody notices the gap. That is the turn-based world, and its discipline is arithmetic — shave milliseconds out of a serial pipeline until the total lands under the threshold. This guide is about a different architecture, and the difference is not speed. It is structure. A full-duplex front end does not take turns. It listens and generates speech simultaneously, so it can acknowledge you mid-sentence, hold the floor while something else works, and yield cleanly when you cut across it. And it does not do the hard thinking: it delegates…


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