Production voice-agent platform — telephony, STT, LLM, TTS, and interrupt handling stitched together so you call an endpoint and get a working phone agent. Pluggable models at every layer.
Voice · Vapi
Vapi
Voice agent infrastructure. Build a phone-agent in a weekend.
Model support
Multi-model
- Claude
- GPT
- Gemini
- ElevenLabs
- Deepgram
Compose your own STT + LLM + TTS stack.
Where it runs
- API
- Web
Tags
- #voice-agents
- #telephony
- #phone
- #real-time
Related in Voice
View ElevenLabs details VoiceFREEMIUMVettedElevenLabs
ElevenLabs
Frontier TTS, voice cloning, and dubbing. Industry default.
Hosted speech synthesis at near-human quality — TTS, voice cloning, multilingual dubbing, and conversational voice agents. Default choice when you need a voice that sounds like a person, not a robot.
- tts
- voice-cloning
- dubbing
- multilingual
View Cartesia details VoiceFREEMIUMCartesia
Cartesia
Low-latency streaming TTS. Sub-100ms first audio.
Streaming-first speech synthesis built around the Sonic family of state-space models. Aims at real-time agent voices where latency between turns is the product. Strong choice for sub-200ms voice loops.
- tts
- streaming
- low-latency
- real-time
View Deepgram details VoiceFREEMIUMDeepgram
Deepgram
Production speech-to-text. The STT default for many companies.
End-to-end speech recognition platform — real-time streaming, batch transcription, speaker diarization, and language detection. Strong on accented speech, telephony audio, and long-form recordings.
- stt
- transcription
- streaming
- diarization