← Speech-to-Text
Batch lane
Soniox
stt-async-v6
Vendor-direct batch / FLEURS n=50 + EdAcc n=82
Measured 2026-11-02
Build voice agents on Speko →stt-async-v6 is measured here for comparison — it is not one of the models Speko routes.
WER · batch
2.74%
95% CI 1.7–4.0 · n=50 · vendor-direct batch · FLEURS
WER · streaming
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Batch-only endpoint
Finalize
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Batch-only endpoint
Time to first token
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Batch-only endpoint
Cost / min
$0.0017
Vendor list, $0.10 per audio hour. Checked 2026-11-02.
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URL
https://speko.ai/benchmarks/stt/soniox-stt-async-v6