Vapi acts as an orchestration layer over Speech-to-Text (STT), Large Language Model (LLM), & Text-to-Speech (TTS) providers — in addition to providing intermediary, realtime, intelligence (with custom ML models) during conversation.
Vapi supports, maintains, and optimizes this full voice AI pipeline so you don’t have to.
Let’s take a closer look at what Vapi does:
1

Support and Optimization

To provide you and your customers with a superior conversational experience, we have various latency optimizations like end-to-end streaming and colocating servers that shave off every possible millisecond of latency. We also manage the coordination of interruptions, turn-taking, and other conversational dynamics.
2

Customizable

We built-in many smaller features to give developers a lot of room to customize and integrate. For example, there’s no need for you to hook up Twilio websockets or build bidirectional audio streaming. Instead, you can connect to the WebRTC stream through our Web, iOS, or Python clients…and then get right back to what you were doing.
3

Voice AI at Any Scale

Finally, we designed Vapi to be highly scalable. We accommodate everything from small businesses and companies all the way up to enterprise-level clients.