2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. Nova-2 Phone Call leads on raw accuracy; Rev AI Reverb is fastest; Rev AI Reverb covers the most languages; Rev AI Reverb is cheapest.
Verdict · who wins what
Most accurate
Nova-2 Phone Call
16.4% WER
Deepgram
Fastest
Rev AI Reverb
0.2× realtime
Rev AI
Most languages
Rev AI Reverb
20 languages
Rev AI
Cheapest
Rev AI Reverb
$0.0030/min
Rev AI
Comparing
2 models · same benchmark
1
Nova-2 Phone Call
Deepgram
Optimized for low-bandwidth phone call audio
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
Nova-2 Phone Call
Rev AI Reverb
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
Latency p99
1.8s
13.9s
Final drain
192ms
—
Real-time factor
1.02×
—
Flicker
9.0%
—
Cadence
0.8/s
—
$18.00
1,000 hours
$349.20
$180.00
No
Auto-detect language
No
No
Live / streaming
Yes
No
Custom vocabulary
Yes
No
Compliance
—
Is Nova-2 Phone Call or Rev AI Reverb more accurate?
Nova-2 Phone Call is more accurate, with a 16.4% word error rate versus 18.2% for Rev AI Reverb, on our standardized benchmark.
Which is cheaper, Nova-2 Phone Call or Rev AI Reverb?
Rev AI Reverb is cheaper at $0.0030/min versus $0.0058/min for Nova-2 Phone Call.
Should you choose Nova-2 Phone Call or Rev AI Reverb?
Choose Nova-2 Phone Call for accuracy; choose Rev AI Reverb for speed, lower cost, and language coverage.
