← Speech-to-Text
Soniox
stt-rt-v5
Measured 2026-10-01
Run stt-rt-v5 on Speko →One API, every model on this board.
WER · batch
7.5%
95% CI 4.8–10.7 · n=50
WER · streaming
Read speech
6.31%
Conversation
16.64%
Details
Read speech
n=1541 · FLEURS test+dev+train · vendor-direct
Conversation
14.4–19.4% · EdAcc n=283 · 60 speakers, 2 passes, 2026-10-01
Finalize
340ms
p50–p90 · US East · n=200 · vendor-direct · ±16%
Time to first token
1.53s
p50–p90 · US East · n=200 · vendor-direct · ±4%
Cost / min
$0.002
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URL
https://speko.ai/benchmarks/stt/soniox-stt-rt-v5