Nemotron 3 Diarization in action: streaming 8-speaker tracking powers a memory-equipped robot

futterneid · reddit · 2026-09-23

A hands-on look at NVIDIA's open-source Nemotron 3 Diarization, which fills a key gap for local voice agents — knowing who is speaking:

Outputs speaker labels (not transcripts), streams in real time, and tracks up to 8 speakers.
The author tested with 1-second streaming chunks and reports excellent quality.
Demo: plugged into a speech-to-speech setup on a DGX Spark driving a Reachy Mini robot — when someone new speaks, the robot asks their name and remembers it for the conversation.
Ships with day-zero Transformers integration and a commercial-friendly license is coming.

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