Vapi launches Simulations to test voice agents against AI callers

Vapi launched Simulations, a native AI-powered testing feature that places AI testers with distinct personalities and customer-derived scenarios on the other end of a call with a voice agent. Each run returns pass/fail results, a full transcript and a recording, and teams can mock API responses, run cheap text-based chat mode or full voice mode, and trigger runs via API with quality gates that block deploys when pass rates drop.