NetEase Youdao open-sources R2T2, a 2B streaming ASR model with an explicit wait state
dr_cintas · x · 2026-09-17
NetEase Youdao launched Confucius R2T2, a 2B-parameter real-time streaming ASR model that is fully open source and free to download.
- Decoding chunks configurable from 80ms to 2s, letting you set your own latency-accuracy tradeoff
- Key design insight: most streaming ASR systems must emit something every step, falling back on language priors when audio is ambiguous; R2T2 introduces an explicit wait state — it holds when acoustic evidence is insufficient and commits when it arrives
- Claims near-offline accuracy in real time, with English and Mandarin demos
- Code, weights (GitHub/HF/ModelScope) and a hosted demo are live, with a vLLM backend; full technical report to come
Related event: NetEase Youdao Open-Sources Streaming ASR Model Confucius4-R2T2(21 posts)→
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