Vapi launches Agent Loop in early access, a self-improving harness for voice agents

Vapi launched Agent Loop in early access, with GA planned for early next year, as a self-improving harness that builds a voice agent from a plain prompt, scores every call against a business goal, drafts fixes for the misses, tests them in simulations and ships them to a slice of live traffic before full rollout. The loop runs on Vapi primitives including Simulations and Traffic Splitting, available in the dashboard now, plus Goals, Call Health and Experiments, coming soon. Every Agent Loop agent is a real Vapi assistant, so engineers keep full dashboard and API access, and human approval is required before any change ships.