Glossary
AI Voice Agent
A conversational AI that answers phone calls and holds natural, multi-turn voice conversations with callers.
An AI voice agent is software that answers and places phone calls, listens to callers in real time, understands their intent through speech recognition and large language models, and responds with natural-sounding speech generated by text-to-speech. Modern voice agents (built on stacks like GPT-4o, Gemini 2.0, Claude, ElevenLabs, Cartesia, Deepgram) operate at sub-second turn latency — closer to human pacing than the IVR systems they replace. They can read from and write to back-end systems (calendars, CRMs, help desks, order systems), follow scripted business rules, escalate to humans on defined triggers, and document every interaction with a transcript and call summary. Unlike legacy IVR (touch-tone menus) or chatbots (text-only), voice agents handle the full phone conversation natively, in 30+ languages, and at unlimited concurrent capacity.
Why it matters
- Replaces voicemail and IVR with real-time, conversational answers — 24/7.
- Scales support, sales, and reception capacity without proportional headcount cost.
- Captures structured data from every call — replacing manual note-taking and inconsistent triage.
- Handles concurrent call volume that no human team can match during seasonal spikes.
- Operates at roughly 5–15% of fully-loaded human agent cost per minute.