Vapi
A platform for building, testing, and deploying real-time voice agents over the phone.
Vapi handles the hard parts of a phone-based voice agent: low-latency orchestration of speech-to-text, a language model, and text-to-speech, plus telephony, interruptions, and turn-taking.
You bring the model and the logic; Vapi makes the real-time voice loop work, so a team can ship a voice agent without building the audio pipeline.
Where it fits
A fit when you need a production phone voice agent and do not want to assemble the real-time speech pipeline yourself.
Where it does not fit
Built specifically for real-time voice: unnecessary for text-only assistants or batch transcription.
Alternatives to Vapi
The closest options on the map, and where each fits instead.
Pairs with
Commonly used alongside it.
