2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. Amazon Transcribe leads on raw accuracy; Amazon Transcribe is fastest; Amazon Transcribe covers the most languages; Universal Streaming is cheapest.
Verdict · who wins what
Most accurate
Amazon Transcribe
13.0% WER
Amazon Web Services
Fastest
Amazon Transcribe
0.4× realtime
Amazon Web Services
Most languages
Amazon Transcribe
77 languages
Amazon Web Services
Cheapest
Universal Streaming
$0.0025/min
Comparing
2 models · same benchmark
1
Universal Streaming
AssemblyAI
Purpose-built for real-time voice agents — ~300ms immutable transcripts
2
Amazon Transcribe
Amazon Web Services
AWS foundation model-powered ASR — 100+ languages
30-day benchmark average
overall WER vs price
Amazon Transcribe
field · 26 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
—
—
13.0s
Final drain
806ms
—
Real-time factor
1.03×
—
Flicker
3.9%
—
Cadence
2.7/s
—
$15.12
$36.00
1,000 hours
$151.20
$360.00
Yes
Auto-detect language
No
Yes
Live / streaming
Yes
No
Custom vocabulary
No
No
Compliance
AssemblyAI
Is Universal Streaming or Amazon Transcribe more accurate?
Amazon Transcribe has a published benchmark at 13.0% word error rate. Universal Streaming has not been benchmarked yet.
Which is cheaper, Universal Streaming or Amazon Transcribe?
Universal Streaming is cheaper at $0.0025/min versus $0.0060/min for Amazon Transcribe.
Should you choose Universal Streaming or Amazon Transcribe?
Choose Universal Streaming for lower cost; choose Amazon Transcribe for accuracy, speed, and language coverage.
