Open-source EOU detector for Indic languages achieves 91.3% TPR on LiveKit Agents

·2026.11.08 01:08

Key point

Apache-2.0 model fine-tuned from Qwen2.5-0.5B runs locally on CPU to detect end-of-turn in English and 8 Indic languages.

Released open-source end-of-turn (EOU) detector fine-tuned from Qwen2.5-0.5B to prevent voice agents from cutting off Indic-language callers mid-sentence.
Achieves 91.3% True Positive Rate (TPR) and AUC 0.967 on held-out validation sets, calibrated to ~10% false cuts on incomplete turns.
Scores 85.3% detection on LiveKit's official real-speech harness for Hindi at the same budget.
Runs fully locally on CPU-only ONNX Runtime (~2GB, fp32) with no cloud inference required.
Supports English, Hinglish, Hindi, Telugu, Tamil, Marathi, Bengali, Gujarati, and Punjabi.
Available as a drop-in plugin for LiveKit Agents under the Apache-2.0 license.

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