Vapi

Vapi provides API-native infrastructure for creating conversational voice AI agents capable of making and receiving phone calls, handling web-based voice interactions, and managing SMS chat. The platform offers over 4,200 configurable points for fine-tuning agent behavior, sub-500ms latency, and support for 100+ languages. Its Squads feature enables multi-agent orchestration where teams of specialized assistants handle different parts of complex conversations with seamless handoffs. Vapi includes a visual Workflow builder, an Outbound Campaigns module for scheduled high-volume calling, and built-in evaluation suites with simulated callers for hallucination testing.