How an AI voice agent picks which language to speak — mid-call
Under the hood of French/Arabic/English switching: what the agent actually listens for, and why it works without any button to press.
"And the agent figures out by itself whether I'm speaking French or Arabic?" That's the question we get most often. Here's the answer — no jargon, what actually happens.
Step 1 — Language identification
From the first complete sentence, a speech-recognition model detects the language with a numerical confidence. Above 80 % confidence, the agent switches to that language. Below, it asks a neutral question ("go ahead") to get a second sentence.
Step 2 — Soft lock
Once the language is identified, the agent stays in it as long as the caller doesn't switch decisively. A borrowed expression from another language ("okay", "bonjour", "شكرا") doesn't trigger a switch — the call's main language dominates.
Step 3 — Deliberate switch
If the caller truly changes language (two full sentences), the agent follows. It continues in the new language with the same context — it doesn't forget what was said before.
All of this happens in a few hundred milliseconds, no menu, no button. The customer just gets the feeling of talking to someone who adapts. You can test it free during the first month.