Vapi is a developer platform for building voice AI agents. Its core product, the Vapi Platform, provides an API that integrates speech-to-text, large language models, and text-to-speech into a unified system, achieving response times under 600 milliseconds. The platform is designed to let developers construct conversational voice interfaces without assembling individual AI components separately.
The company reports significant adoption among software developers. More than 600,000 developers use the platform, with over 2,000 joining daily. At scale, Vapi powers hundreds of thousands of voice calls each day across its user base.
Vapi raised $20 million in a Series A funding round. The company's technical work spans voice AI, speech-to-text processing, large language model integration, and text-to-speech synthesis.
