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Whisper Large V3 vs Speechmatics Standard

2 models compared on the same benchmark — accuracy, latency, price, language coverage and capabilities. Whisper Large V3 leads on raw accuracy; Speechmatics Standard is fastest; Speechmatics Standard covers the most languages; Whisper Large V3 is cheapest.

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Verdict · who wins what

Most accurate

Whisper Large V3

14.4% WER

Groq

Fastest

Speechmatics Standard

0.1× realtime

Speechmatics

Most languages

Speechmatics Standard

48 languages

Speechmatics

Cheapest

Whisper Large V3

$0.0019/min

Groq

Comparing

2 models · same benchmark

1

Batch

Whisper Large V3

Groq

$0.0019/min
#11 · 79.9

OpenAI Whisper large-v3 served on Groq's LPU hardware — top Whisper accuracy at Groq speed and cost, with word-level timestamps and automatic language detection.

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2

Batch

Speechmatics Standard

Speechmatics

$0.0050/min
#13 · 60.9

Cost-effective model — fast turnaround, 55+ languages

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Overview

30-day benchmark average

Overall score

0–100

79.9

60.9

Accuracy rank

of 35

#11

#13

Word error rate

WER

14.4%

14.7%

Character error rate

CER

11.2%

9.8%

Match error rate

MER

13.3%

13.8%

Word info lost

WIL

18.2%

19.3%

Languages

12

48

Cost vs. accuracy

overall WER vs price

Speechmatics Standard

Whisper Large V3

field · 33 models

lower-left is better

Accuracy by category

WER · lower is better

code_switching

68.5%
54.2%

conversational

10.9%
7.3%

finance

6.4%

Accuracy by accent

WER · English

african

26.2%
13.9%

australian

12.3%
13.9%

indian

19.1%
6.3%

Speed & latency

p50 → p99

Processing speed

× realtime

0.0×

0.1×

Latency p50

3.1s

7.1s

Latency p90

3.6s

7.3s

Realtime / streaming

Streaming benchmark averages

Realtime rank

—

—

Realtime score

0–100

—

—

Time to first word

—

—

Final drain

—

—

Real-time factor

—

—

Flicker

—

—

Cadence

—

—

Reliability

Rolling 30 days

Uptime

—

100.00%

Error rate

—

0.00%

Pricing

billed per second

Rate

per minute

$0.0019

$0.0050

Billing granularity

per 1s

per 1s

1 hour of audio

$0.11

$0.30

100 hours

Capabilities

Feature support

Speaker diarization

No

Yes

Word-level timestamps

Yes

Yes

Code-switching

No

Coverage & deployment

Languages · formats · regions

Languages

12

48

Mode

Batch

Batch

Region

United States

Europe

Audio formats

7.9%

general

8.1%
7.4%

legal

2.7%
4.0%

medical

2.8%
7.8%

noisy

36.3%
50.3%

technical

5.3%
4.6%

uk

6.0%
0.0%

us

5.7%
3.8%

Latency p99

3.6s

7.3s

$11.16

$29.88

1,000 hours

$111.60

$298.80

Yes

Auto-detect language

Yes

Yes

Live / streaming

No

No

Custom vocabulary

No

Yes

mp3
wav
flac
m4a
ogg
webm
mp3
wav
flac
m4a
ogg

Max file size

100 MB

1 GB

Max duration

No limit

No limit

Compliance

—

SOC2
GDPR

Frequently asked questions

Is Whisper Large V3 or Speechmatics Standard more accurate?

Whisper Large V3 is more accurate, with a 14.4% word error rate versus 14.7% for Speechmatics Standard, on our standardized benchmark.

Which is cheaper, Whisper Large V3 or Speechmatics Standard?

Whisper Large V3 is cheaper at $0.0019/min versus $0.0050/min for Speechmatics Standard.

Should you choose Whisper Large V3 or Speechmatics Standard?

Choose Whisper Large V3 for accuracy and lower cost; choose Speechmatics Standard for speed and language coverage.