Vapi
Build and deploy customizable AI voice agents for sales and support.
Vapi is developer infrastructure for voice agents: speech recognition, the model, speech synthesis and telephony wired into one pipeline you configure rather than assemble. What it is really selling is the hard part — sub-second turn taking and graceful handling of a caller interrupting, which is what separates a usable voice agent from an unbearable one. That leaves you the design work: what the agent may do, when it must hand off to a human, and what happens when it mishears.
Best for
- Developers building voice agents
- Phone-based support and intake flows
- Automating repetitive inbound or outbound calls
Key features
- APIs for speech, model and telephony as one pipeline
- Interruption handling and low-latency turn taking
- Tool calling so an agent can act mid-conversation
Why it matters
It handles the latency and interruption plumbing that makes voice agents hard, leaving you the conversation design.
