Show HN: Nari Qwen3-TTS and Qwen3-ASR – High accuracy, low latency and cost
Nari Labs claims top Coval voice AI benchmark rankings with low-latency, low-cost Qwen3-ASR and Qwen3-TTS inference endpoints.
Nari Labs says its Qwen3-ASR Fast endpoint ranks #1 in Coval's time-to-final-segment latency (p50 44 ms) with 3.6% WER at $0.12/hour, behind only AssemblyAI Universal 3.5 Pro on accuracy. Its Qwen3-TTS Fast ranks #2 in time-to-first-audio (p50 63 ms) and #1 in WER at 3.8%, priced at $10 per 1M characters. The company reports beating the official Qwen3 TTS Flash Realtime endpoint (8.8% WER, 692 ms median TTFA) and Baseten's dedicated endpoint (6.0% WER, 101 ms). Public beta APIs are moving to paid general availability with $20 in credits for existing accounts.
- Qwen3-ASR Fast: p50 44 ms TTFS, 3.6% WER, $0.12/hour, ranked #1 latency on Coval.
- Qwen3-TTS Fast: 63 ms TTFA, 3.8% WER (best), $10 per 1M characters.
- Outperforms official Qwen3 endpoint (8.8% WER, 692 ms) and Baseten (6.0% WER, 101 ms).
- Beta APIs move to paid GA shortly, with $20 credits for existing accounts.
From the original article
2 min read at narilabs.comNari Labs leads Coval’s voice AI benchmark by sitting on the quality-latency Pareto Frontier for both Text-to-Speech and Speech-to-Text. We also lead the latency-cost and quality-cost Pareto Frontier out of all publicly available models on the benchmark. Coval is a leading provider of voice AI evaluation and benchmarks.
By toebee · narilabs.com
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