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Nova-2 vs GPT-4o Mini Transcribe

2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. GPT-4o Mini Transcribe leads on raw accuracy; GPT-4o Mini Transcribe is fastest; GPT-4o Mini Transcribe covers the most languages; GPT-4o Mini Transcribe is cheapest.

Open both in playground

Verdict · who wins what

Most accurate

GPT-4o Mini Transcribe

13.6% WER

OpenAI

Fastest

GPT-4o Mini Transcribe

0.1× realtime

OpenAI

Most languages

GPT-4o Mini Transcribe

98 languages

OpenAI

Cheapest

GPT-4o Mini Transcribe

$0.0030/min

OpenAI

Comparing

2 models · same benchmark

1

Batch & Realtime

Nova-2

Deepgram

$0.0058/min
#18 · 76.2

Deepgram's Nova-2 speech recognition

Use This ModelDetails →

2

Batch

GPT-4o Mini Transcribe

OpenAI

$0.0030/min
#9 · 81.1

GPT-4o Mini optimized for fast transcription

Use This ModelDetails →

Overview

30-day benchmark average

Overall score

0–100

76.2

81.1

Accuracy rank

of 35

#18

#9

Word error rate

WER

16.5%

13.6%

Character error rate

CER

11.9%

9.3%

Match error rate

MER

15.4%

12.8%

Word info lost

WIL

21.0%

17.8%

Languages

33

98

Cost vs. accuracy

overall WER vs price

GPT-4o Mini Transcribe

Nova-2

field · 33 models

lower-left is better

Accuracy by category

WER · lower is better

code_switching

63.7%
18.6%

conversational

10.2%
12.4%

finance

11.3%
6.0%

general

13.1%
11.2%

legal

3.8%
4.9%

medical

7.3%
3.5%

noisy

31.3%
40.8%

technical

4.9%
4.0%

Accuracy by accent

WER · English

african

26.2%
29.2%

australian

15.4%
12.3%

indian

25.4%
20.6%

uk

11.9%
7.5%

us

9.4%
18.9%

Speed & latency

p50 → p99

Processing speed

× realtime

0.1×

0.1×

Latency p50

1.6s

2.0s

Latency p90

3.7s

2.4s

Latency p99

3.7s

2.4s

Realtime / streaming

Streaming benchmark averages

Realtime rank

of 17

#4

—

Realtime score

0–100

78.0

—

Time to first word

986ms

—

Final drain

192ms

—

Real-time factor

1.02×

—

Flicker

10.5%

—

Cadence

0.8/s

—

Reliability

Rolling 30 days

Uptime

50.00%

100.00%

Error rate

50.00%

0.00%

Pricing

billed per second

Rate

per minute

$0.0058

$0.0030

Billing granularity

per 1s

per 1s

1 hour of audio

$0.35

$0.18

100 hours

$34.92

$18.00

1,000 hours

$349.20

$180.00

Capabilities

Feature support

Speaker diarization

Yes

No

Word-level timestamps

Yes

Yes

Code-switching

Yes

No

Auto-detect language

Yes

Yes

Live / streaming

Yes

No

Custom vocabulary

Yes

No

Coverage & deployment

Languages · formats · regions

Languages

33

98

Mode

Batch & Realtime

Batch

Region

United States

United States

Audio formats

mp3
wav
flac
m4a
ogg
webm
mp3
wav
flac
m4a
ogg
webm

Max file size

2 GB

25 MB

Max duration

No limit

No limit

Compliance

HIPAA
SOC2
GDPR
SOC2
GDPR

Frequently asked questions

Is Nova-2 or GPT-4o Mini Transcribe more accurate?

GPT-4o Mini Transcribe is more accurate, with a 13.6% word error rate versus 16.5% for Nova-2, on our standardized benchmark.

Which is cheaper, Nova-2 or GPT-4o Mini Transcribe?

GPT-4o Mini Transcribe is cheaper at $0.0030/min versus $0.0058/min for Nova-2.

Should you choose Nova-2 or GPT-4o Mini Transcribe?

GPT-4o Mini Transcribe is the stronger choice overall, leading on accuracy, speed, lower cost, and language coverage.