VoiceGateway is an open-source profiler for LiveKit voice agents. It connects call events, turn timing and infrastructure evidence so you can see what happened along the way.
Cloud is $9 a month for 2,000 profiled call minutes. Cancel any time. Open source and free to self-host.
VoiceGatewayReceives telemetry outside the audio path
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SIP connects phone calls; WebRTC connects browsers. LiveKit’s media server (SFU) carries the audio. The agent worker coordinates turns, tools and model API calls.
Did the caller connect? Did the agent join? Did a reply reach playback?
Connection setup and conversation timing are different parts of the call.
Illustrated regions. Co-locating the media server and agent worker avoids a cross-region media hop. The worker calls model APIs; provider inference may run elsewhere.
In this captured turn, the model’s first token is only part of the wait. Select a measurement to understand what it tells you.
Hello.
Reported response2,665 ms
Durations overlap; do not add them.
The agent must decide when to answer. Here, end-of-turn handling is the longest reported duration, even though the model starts generating quickly.
Start by inspecting the turn decision.
Captured October 12, 2026. Caller-network and carrier transit are not measured here. No audio was recorded.
View the sourceInspect the phone connection, media server, agent and models. Each layer contributes evidence. Missing measurements stay visible as gaps.
Scroll across to follow the call
From the caller stopping to the agent speaking, across 11 measured turns. One of the three captured calls arrived by phone.
Compare response times and missed joins as calls increase. Check the load generator too: a stressed test runner cannot prove the agent’s limit.
Captured feasibility run. Run the same capacity test against your own agent from the console.
Keep control with self-hosting.
Get a hosted workspace with Cloud.
Collect call evidence and inspect it on your infrastructure.
Open-source V1 preview: calls, recordings, issues, alerts and capacity tests, on your servers.
Spend your time improving your agents. Give your team a shared place to understand every call.
Billed monthly through Stripe. Cancel any time. Four quick questions, then checkout and your workspace. Need more minutes? Ask about Custom.
