Zendesk

Zendesk's voice AI agents handle inbound calls end-to-end, answering questions, collecting information, and routing complex issues to live agents when needed. Built into Zendesk's broader customer service suite, the voice agent taps into your existing ticket system, knowledge base, and agent assignments so callers don't repeat information when transferred. You set it up through the Zendesk UI without code.

This approach works well if you're already a Zendesk customer managing support tickets, because your voice agent sits in the same system as your support team. If you're building voice automation from scratch, Zendesk is a solid all-in-one choice, though it's more focused on support use cases than on building diverse agent applications. The integration with live agent handoff is smooth.