2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. Chirp 3 leads on raw accuracy; Chirp 3 is fastest; Chirp 3 covers the most languages; GPT-4o Transcribe Diarize is cheapest.
Verdict · who wins what
Most accurate
Chirp 3
13.4% WER
Google Cloud
Fastest
Chirp 3
0.3× realtime
Google Cloud
Most languages
Chirp 3
72 languages
Google Cloud
Cheapest
GPT-4o Transcribe Diarize
$0.0060/min
OpenAI
Comparing
2 models · same benchmark
1
Chirp 3
Google Cloud
Google's latest generative ASR foundation model — 85+ languages
2
GPT-4o Transcribe Diarize
OpenAI
GPT-4o transcription with built-in speaker diarization
30-day benchmark average
overall WER vs price
Chirp 3
GPT-4o Transcribe Diarize
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
11.2s
18.1s
$36.00
1,000 hours
$640.80
$360.00
No
Auto-detect language
Yes
Yes
Live / streaming
No
No
Custom vocabulary
Yes
No
Compliance
Is Chirp 3 or GPT-4o Transcribe Diarize more accurate?
Chirp 3 is more accurate, with a 13.4% word error rate versus 19.7% for GPT-4o Transcribe Diarize, on our standardized benchmark.
Which is cheaper, Chirp 3 or GPT-4o Transcribe Diarize?
GPT-4o Transcribe Diarize is cheaper at $0.0060/min versus $0.0107/min for Chirp 3.
Should you choose Chirp 3 or GPT-4o Transcribe Diarize?
Choose Chirp 3 for accuracy, speed, and language coverage; choose GPT-4o Transcribe Diarize for lower cost.
