Long pauses make callers repeat themselves or hang up. Latency depends on the speech recognition, the language model, the speech synthesis and the network.
Barge-in matters because callers interrupt, correct themselves and answer before the question is finished. Without it, the AI talks over the caller.
Vendor figures are rarely comparable. Measure both in your own test calls.
As of November 11, 2026. General information, not legal advice.