AI Voice Agent Development Company

An AI voice agent answers and holds real phone conversations. It transcribes the caller in real time, works out what they want, asks for any missing details, takes the action — booking, updating a record, raising a ticket — and hands off to a human when it should. Unlike an IVR, the caller speaks naturally instead of navigating a menu.

Voice has constraints text does not. There is no scrollback, so the agent must hold context by memory; there is no typing indicator, so any pause reads as a failure; and callers interrupt. That means streaming speech recognition, barge-in handling, and sub-second response targets. A chatbot ported to a phone line sounds broken within two turns.

We target under 800 milliseconds from the caller finishing to the agent beginning to speak, which is roughly the pause length people expect in conversation. Hitting that requires streaming transcription, streaming synthesis, and keeping the model call on the critical path as short as possible.

It transfers to a human — warm, not blind. The person receiving the call gets the transcript and the details already collected, so the caller does not repeat themselves. Escalation triggers are configurable: explicit request, repeated misunderstanding, high-value account, detected frustration, or any topic you flag as human-only.

Twilio most often, but also Vonage, Telnyx, a direct SIP trunk, or an existing PBX such as Asterisk or FreeSWITCH. If you already have numbers and a carrier relationship, we build onto that rather than asking you to port everything.

Yes, and usually on the same number. The agent detects the language the caller is using and continues in it, including mid-call switches. This works far better than routing each language to a separate line, which callers rarely navigate correctly.

Ten to fourteen weeks for a production agent: telephony, speech pipeline, conversation design, integrations, escalation, and monitoring. A narrow single-intent agent — appointment booking only, for example — can be live in six. We shadow real calls before taking any live traffic.

You pay the underlying providers directly — telephony per minute, speech recognition, model inference, and text to speech. For most deployments that lands well under the cost of the equivalent staffed coverage. We do not resell those services or add a per-minute margin, and the accounts stay in your name.