OpenAI
GPT Transcribe
Measured 2026-10-01
Run GPT Transcribe on Speko →One API, every model on this board.
WER · batch
2.5%
WER · streaming
Read speech
5.85%
Conversation
16.82%
Details
Read speech
n=1541 · FLEURS test+dev+train · vendor-direct
Conversation
14.3–19.5% · EdAcc n=283 · 60 speakers, 2 passes, 2026-10-01
Finalize
817ms
p50–p90 · US East · n=200 · vendor-direct · re-measured 2026-09-15 · ±7%
Measured 2026-09-15
Marker-limited: 48 of 200 readings land before the measured speech end, 17 by more than 0.5s. The model emits nothing until its VAD closes a segment, so first token is the wait a caller hears.
Time to first token
6.28s
p50–p90 · US East · n=200 · vendor-direct · re-measured 2026-09-15 · ±10%
Measured 2026-09-15
Cost / min
$0.0045
Billed per minute, not per token.
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