TechnologyFebruary 1, 20267 min read
AI Voice Agents: The Phone Support Revolution
How AI voice agents are transforming call centers and customer service.
A1
AgenteUno Team
AgenteUno
AI voice agents are no longer science fiction. In 2026, technology allows creating agents that hold phone conversations indistinguishable from a human, with less than 500ms latency.
How a Voice Agent Works
The pipeline of a modern voice agent:
- STT (Speech-to-Text): Transcribes user speech to text (Deepgram Nova-3, ~100ms)
- LLM (Large Language Model): Processes text and generates a response (Groq Llama 3.3, ~200ms)
- TTS (Text-to-Speech): Converts response to natural speech (Cartesia Sonic-3, ~100ms)
Total latency: ~400-500ms — comparable to a natural pause in conversation.
Advantages Over Traditional IVR
| Traditional IVR | AI Voice Agent | |
|---|---|---|
| Experience | "Press 1 for..." | Natural conversation |
| Understanding | Fixed options | Natural language |
| Resolution | Redirects to human | Resolves directly |
| Availability | Limited | 24/7 |
| Cost | High (infrastructure) | Low ($0.06/min) |
Use Cases
- Call reception: Answers and routes to the correct department
- Appointment booking: Books directly in the calendar
- Level 1 support: Resolves FAQs and common issues
- Collections: Automatic payment reminders
- Surveys: Post-service satisfaction surveys
AgenteUno Voice
Our voice agent uses:
- Deepgram Nova-3 for STT (fastest on the market)
- Groq for LLM (dedicated hardware inference)
- Cartesia Sonic-3 for TTS (high-quality native Spanish voice)
- Telnyx for telephony (local numbers in 100+ countries)
From $0.06/minute all-inclusive. No hidden costs.