Originally published on AI Tech Connect.
What this test plan covers Most teams arrive at voice testing with a text evaluation suite they are quietly proud of and a voice agent that keeps embarrassing them on real calls. The suite says the agent is fine. Callers say it talks over them, cuts them off halfway through a postcode, and goes silent for two seconds before answering. Both are telling the truth, because the suite is grading a different thing from the one that is failing. The stakes are rising too: OpenAI has made voice backends user-selectable across its GPT-6 tiers, so the latency profile you test against is now a choice your team owns rather than a fixed property of the platform. This guide is the missing layer. It assumes you already have an architecture and a latency budget — if you do not, our guides to realtime…
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