Relay-1 · speech-to-speech translation

Translation fast enough
to hold a conversation.

Relay-1 is our own model. Audio in, transcription, translated captions, and translated audio come out.

Loading translator…

Try it live, and expect it to interrupt you — it's designed for the other person to hear it as you speak.

Pinch for MacOr wire up the API

Ten languages, in the apps you already use

On the Mac, Pinch registers itself as a microphone. Pick it from any app's audio dropdown and it translates whatever is going through the call. Nothing joins the meeting, so there's no extra name in the participant list.

ZoomMicrosoft TeamsGoogle MeetWhatsAppDiscord
English
Spanish
French
German
Hindi
Russian
Portuguese
Japanese
Italian
Dutch

Do you want to use it, or build on it?

Use it on your Mac

$0.04 a minute, and new accounts start with $5 of credit. Runs on your machine, so the audio never takes a detour through a meeting bot. macOS 12 and up, Intel or Apple Silicon.

Pinch for Mac

Build on the API

Open a websocket, stream audio in, get translated audio back. Same model as the app, at $0.02 a minute. That's 41% less than OpenAI charges for gpt-realtime-translate, which Relay-1 outscores on translation quality, naturalness and intelligibility.

Read the API docs

We benchmarked it against everyone

Seven real-time systems, five metrics, one public dataset. Relay-1 lands in the top tier on the things that make a live conversation work: quality you can trust and a voice that sounds human. We published the whole thing, numbers and method.

Read the benchmark
0.77
Translation quality
XCOMET-XL. OpenAI's gpt-realtime-translate scores 0.73.
3.27
Naturalness
UTMOSv2. OpenAI's gpt-realtime-translate scores 2.89.
41%
Cheaper than OpenAI
$0.02 a minute against $0.034 for gpt-realtime-translate.
Licensing & deployment

Run it on your own hardware

We trained Relay-1 ourselves, which means we can do things the platform vendors can't. On-premise deployment. Data residency in a region you pick. White-label licensing. Fine-tuning on your own audio, whether that's clinical vocabulary, courtroom procedure, or an internal product name no general model has ever heard.

Nobody at Google is going to ship you weights. If the thing blocking your rollout is that audio can't leave your network, that's a solvable problem and it's worth a conversation.

How it works, in detail

Ten languages. No subscription.

$0.04 a minute on the Mac, $0.02 over the API, and $5 of credit to start.

Pinch for MacRead the API docs