← Speech-to-Text
OpenAI
GPT-4o Transcribe
Measured 2026-10-01
Run GPT-4o Transcribe on Speko →One API, every model on this board.
WER · batch
2.3%
WER · streaming
Read speech
5.64%
Conversation
32.91%
Details
Read speech
n=1541 · FLEURS test+dev+train · vendor-direct
Conversation
28.4–36.9% · EdAcc n=283 · 60 speakers, 2 passes, 2026-10-01
Finalize
848ms
p50–p90 · US East · n=199 · vendor-direct · ±10%
Time to first token
6.40s
p50–p90 · US East · n=199 · vendor-direct · ±10%
Cost / min
$0.006
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https://speko.ai/benchmarks/stt/openai-gpt-4o-transcribe