2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. Whisper Large V3 Turbo leads on raw accuracy; Nova-2 Conversational AI is fastest; Whisper Large V3 Turbo 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
Nova-2 Conversational AI
0.1× realtime
Deepgram
Most languages
Whisper Large V3 Turbo
12 languages
Groq
Cheapest
Whisper Large V3 Turbo
$0.0007/min
Groq
Comparing
2 models · same benchmark
1
Nova-2 Conversational AI
Deepgram
Optimized for human-to-bot interactions (IVR, voice assistants)
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
Nova-2 Conversational AI
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
Latency p99
3.9s
3.4s
Final drain
185ms
—
Real-time factor
1.01×
—
Flicker
10.5%
—
Cadence
0.8/s
—
$3.96
1,000 hours
$349.20
$39.60
No
Auto-detect language
No
Yes
Live / streaming
Yes
No
Custom vocabulary
Yes
No
Compliance
—
Is Nova-2 Conversational AI or Whisper Large V3 Turbo more accurate?
Whisper Large V3 Turbo is more accurate, with a 14.3% word error rate versus 18.2% for Nova-2 Conversational AI, on our standardized benchmark.
Which is cheaper, Nova-2 Conversational AI or Whisper Large V3 Turbo?
Whisper Large V3 Turbo is cheaper at $0.0007/min versus $0.0058/min for Nova-2 Conversational AI.
Should you choose Nova-2 Conversational AI or Whisper Large V3 Turbo?
Choose Nova-2 Conversational AI for speed; choose Whisper Large V3 Turbo for accuracy, lower cost, and language coverage.
