2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. Whisper Large V3 Turbo leads on raw accuracy; Soniox STT Realtime is fastest; Soniox STT Realtime covers the most languages; Whisper Large V3 Turbo is cheapest.
Verdict · who wins what
Most accurate
Whisper Large V3 Turbo
14.3% WER
Groq
Fastest
Soniox STT Realtime
0.1× realtime
Soniox
Most languages
Soniox STT Realtime
25 languages
Soniox
Cheapest
Whisper Large V3 Turbo
$0.0007/min
Groq
Comparing
2 models · same benchmark
1
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.
2
Soniox STT Realtime
Soniox
Soniox realtime streaming transcription — low-latency multilingual STT across 60+ languages with speaker diarization, per-word timestamps, and automatic language identification over a single WebSocket.
30-day benchmark average
overall WER vs price
field · 27 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
—
3.4s
—
Final drain
—
0ms
Real-time factor
—
1.09×
Flicker
—
66.5%
Cadence
—
3.6/s
$3.96
$11.88
1,000 hours
$39.60
$118.80
No
Auto-detect language
Yes
Yes
Live / streaming
No
Yes
Custom vocabulary
No
No
Compliance
—
—
Is Whisper Large V3 Turbo or Soniox STT Realtime more accurate?
Whisper Large V3 Turbo has a published benchmark at 14.3% word error rate. Soniox STT Realtime has not been benchmarked yet.
Which is cheaper, Whisper Large V3 Turbo or Soniox STT Realtime?
Whisper Large V3 Turbo is cheaper at $0.0007/min versus $0.0020/min for Soniox STT Realtime.
Should you choose Whisper Large V3 Turbo or Soniox STT Realtime?
Choose Whisper Large V3 Turbo for accuracy and lower cost; choose Soniox STT Realtime for speed and language coverage.
