2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. GPT-4o Transcribe Diarize leads on raw accuracy; GPT-4o Transcribe Diarize covers the most languages; GPT-4o Transcribe Diarize is cheapest.
Verdict · who wins what
Most accurate
GPT-4o Transcribe Diarize
19.7% WER
OpenAI
Fastest
—
—
Most languages
GPT-4o Transcribe Diarize
12 languages
OpenAI
Cheapest
GPT-4o Transcribe Diarize
$0.0060/min
OpenAI
Comparing
2 models · same benchmark
1
Google Telephony
Google Cloud
Optimized for telephony audio (8kHz)
2
GPT-4o Transcribe Diarize
OpenAI
GPT-4o transcription with built-in speaker diarization
30-day benchmark average
overall WER vs price
GPT-4o Transcribe Diarize
Google Telephony
field · 23 models
lower-left is better
WER · lower is better
WER · English
p50 → p99
Streaming benchmark averages
Rolling 30 days
billed per second
Feature support
Languages · formats · regions
general
legal
medical
noisy
technical
uk
us
Latency p99
22.3s
18.1s
$36.00
1,000 hours
$961.20
$360.00
No
Auto-detect language
No
Yes
Live / streaming
No
No
Custom vocabulary
No
No
Compliance
Is Google Telephony or GPT-4o Transcribe Diarize more accurate?
GPT-4o Transcribe Diarize is more accurate, with a 19.7% word error rate versus 20.1% for Google Telephony, on our standardized benchmark.
Which is cheaper, Google Telephony or GPT-4o Transcribe Diarize?
GPT-4o Transcribe Diarize is cheaper at $0.0060/min versus $0.0160/min for Google Telephony.
Should you choose Google Telephony or GPT-4o Transcribe Diarize?
GPT-4o Transcribe Diarize is the stronger choice overall, leading on accuracy, lower cost, and language coverage.
