One static binary
The default build is cgo-free. Low, predictable memory, fast startup, and real concurrency for many simultaneous sessions.
Voice agents in Go.
Real-time voice agents for the browser, phone, LiveKit and WhatsApp.
- Audio in
- VAD
- STT
- LLM
- TTS
- Audio out
Each stage runs on its own goroutine.
Standard WebRTC, self-hosted
Plain Pion WebRTC: no hosted transport, no proprietary SDK, no cloud to sign up for. Ship the binary; the browser connects.
Turn-taking that works
Silero VAD and Smart Turn v3 run locally on ONNX, so the bot waits for a real end-of-turn instead of any pause, and the user can cut in.
Pluggable providers
Swap any STT, LLM or TTS behind a small interface. 50+ providers, plus single-model speech-to-speech.
Concurrent by design
Independent processors, each on its own goroutine. Interruptions are frames, so barge-in reaches every stage at once.
Telephony included
Inbound and outbound phone calls over Twilio, Telnyx, Plivo and Exotel, with DTMF and an idle watchdog.
A pipeline is a list of processors.
Each provider is one line. The browser connects directly to your binary.
main.go
stt := openai.NewSTT(openai.STTConfig{APIKey: key, SampleRate: opus.SampleRate})
llm := openai.NewLLM(openai.LLMConfig{APIKey: key})
tts := openai.NewTTS(openai.TTSConfig{APIKey: key})
t := rtc.NewTransport(conn, transport.DefaultParams())
agg := aggregators.New(frames.NewLLMContext("You are a helpful voice assistant."))
task := pipeline.NewTask(pipeline.New(
t.Input(), stt, agg.User(), llm, tts, t.Output(), agg.Assistant(),
), pipeline.TaskParams{})
task.Run(ctx)