How to Build a Voice AI Agent with Vapi in Under an Hour
Learn how to build and deploy a production-ready voice AI agent with Vapi, from choosing a model to making your first test call.
Vapi is a platform that lets developers create voice AI agents capable of holding natural phone conversations. It abstracts away the complexity of speech-to-text, text-to-speech, and model orchestration, so you can build a voice agent that answers business calls, books appointments, qualifies leads, or supports customers. Vapi supports plugging in various large language models, real-time streaming, and custom tools, making it a popular choice for startups building voicebots and automated phone systems.
Product Features
- Real-time voice agents with natural turn-taking and low latency
- Bring-your-own-LLM support with popular models and providers
- Custom tools and function calling to take real actions during calls
- Native support for phone numbers, SIP, and web integrations
- Conversation history, transcription, and analytics for every call
- SDKs and APIs for fast integration into any application
Product Highlights
- Build production voice agents without months of audio engineering
- Flexible model choice to balance cost, latency, and quality
- Scalable infrastructure that handles live inbound and outbound calls
- Developer-friendly API with extensive documentation and examples
Use Cases
- Automating inbound sales calls and lead qualification
- Building customer support agents that answer common questions
- Booking appointments and managing scheduling over the phone
- Enabling order-taking and payment flows for businesses
- Creating voice interfaces for web and mobile applications
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