2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. Universal-3 Pro leads on raw accuracy; Universal-3 Pro is fastest; Whisper Large V3 Turbo covers the most languages; Whisper Large V3 Turbo is cheapest.
Verdict · who wins what
Most accurate
Universal-3 Pro
17.3% WER
AssemblyAI
Fastest
Universal-3 Pro
0.2× realtime
AssemblyAI
Most languages
Whisper Large V3 Turbo
12 languages
Groq
Cheapest
Whisper Large V3 Turbo
$0.0007/min
Groq
Comparing
2 models · same benchmark
1
Universal-3 Pro
AssemblyAI
AssemblyAI's most powerful speech language model — up to 1000 keyterm phrases
2
Whisper Large V3 Turbo
Groq
OpenAI Whisper large-v3-turbo served on Groq's LPU hardware — very fast, very low cost batch transcription with word-level timestamps and automatic language detection.
30-day benchmark average
overall WER vs price
Universal-3 Pro
Whisper Large V3 Turbo
field · 29 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
5.8s
2.6s
$3.96
1,000 hours
$208.80
$39.60
No
Auto-detect language
Yes
Yes
Live / streaming
No
No
Custom vocabulary
Yes
No
Compliance
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Is Universal-3 Pro or Whisper Large V3 Turbo more accurate?
Universal-3 Pro is more accurate, with a 17.3% word error rate versus 18.4% for Whisper Large V3 Turbo, on our standardized benchmark.
Which is cheaper, Universal-3 Pro or Whisper Large V3 Turbo?
Whisper Large V3 Turbo is cheaper at $0.0007/min versus $0.0035/min for Universal-3 Pro.
Should you choose Universal-3 Pro or Whisper Large V3 Turbo?
Choose Universal-3 Pro for accuracy and speed; choose Whisper Large V3 Turbo for lower cost and language coverage.
