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; Rev AI Reverb is cheapest.
Verdict · who wins what
Most accurate
Chirp 3
14.1% WER
Google Cloud
Fastest
Chirp 3
0.3× realtime
Google Cloud
Most languages
Chirp 3
72 languages
Google Cloud
Cheapest
Rev AI Reverb
$0.0030/min
Rev AI
Comparing
2 models · same benchmark
1
Chirp 3
Google Cloud
Google's latest generative ASR foundation model — 85+ languages
2
Rev AI Reverb
Rev AI
Rev AI Reverb — async speech-to-text built on Rev's Reverb ASR model (trained on 3M+ hours of human-transcribed audio), with speaker diarization for up to 8 speakers and word-level timestamps. English-core with broad language support via the async API.
30-day benchmark average
overall WER vs price
Chirp 3
field · 30 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
10.3s
13.9s
$18.00
1,000 hours
$640.80
$180.00
No
Auto-detect language
Yes
No
Live / streaming
No
No
Custom vocabulary
Yes
No
Compliance
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Is Chirp 3 or Rev AI Reverb more accurate?
Chirp 3 is more accurate, with a 14.1% word error rate versus 22.7% for Rev AI Reverb, on our standardized benchmark.
Which is cheaper, Chirp 3 or Rev AI Reverb?
Rev AI Reverb is cheaper at $0.0030/min versus $0.0107/min for Chirp 3.
Should you choose Chirp 3 or Rev AI Reverb?
Choose Chirp 3 for accuracy, speed, and language coverage; choose Rev AI Reverb for lower cost.
