Vapi

Vapi is a San Francisco-based voice AI developer platform that enables builders to create, test, and deploy voice agents via a cloud API. It focuses on developers and enterprises needing scalable, configurable voice assistants with features like natural language processing, knowledge retrieval, multi-turn dialogue, and guardrails for security and compliance. Revenue is driven by API/platform usage; differentiators include an API-first architecture, enterprise-grade reliability, and security assurances.