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Azure Speech vs Whisper Large V3 Turbo

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

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Verdict · who wins what

Most accurate

Whisper Large V3 Turbo

12.9% WER

Cloudflare

Fastest

Whisper Large V3 Turbo

1.0× realtime

Cloudflare

Most languages

Azure Speech

19 languages

Microsoft Azure

Cheapest

Whisper Large V3 Turbo

$0.0005/min

Cloudflare

Comparing

2 models · same benchmark

1

Batch & Realtime

Azure Speech

Microsoft Azure

$0.0060/min
#19 · 74.4

Azure default STT model — 140+ languages, diarization, word timestamps

Use This ModelDetails →

2

Batch

Whisper Large V3 Turbo

Cloudflare

$0.0005/min
#10 · 76.7

OpenAI Whisper large-v3-turbo hosted by Cloudflare Workers AI, with word-level timestamps and automatic language detection.

Use This ModelDetails →

Overview

30-day benchmark average

Overall score

0–100

74.4

76.7

Accuracy rank

of 37

#19

#10

Word error rate

WER

15.3%

12.9%

Character error rate

CER

10.7%

9.2%

Match error rate

MER

14.9%

11.9%

Word info lost

WIL

18.8%

16.3%

Languages

19

12

Cost vs. accuracy

overall WER vs price

Azure Speech

Whisper Large V3 Turbo

field · 35 models

lower-left is better

Accuracy by category

WER · lower is better

code_switching

60.1%
23.2%

conversational

9.6%
10.0%

finance

7.1%
6.7%

general

10.5%
10.7%

legal

1.7%
2.8%

medical

2.8%
2.1%

noisy

40.0%
36.3%

technical

7.0%
5.2%

Accuracy by accent

WER · English

african

23.1%
24.6%

australian

23.1%
36.9%

indian

41.3%
23.8%

uk

14.9%
6.0%

us

11.3%
9.4%

Speed & latency

p50 → p99

Processing speed

× realtime

0.3×

1.0×

Latency p50

2.0s

5.3s

Latency p90

2.0s

5.3s

Latency p99

2.0s

5.3s

Realtime / streaming

Streaming benchmark averages

Realtime rank

of 15

#12

—

Realtime score

0–100

72.4

—

Time to first word

2.1s

—

Final drain

0ms

—

Real-time factor

1.01×

—

Flicker

13.2%

—

Cadence

1.7/s

—

Reliability

Rolling 30 days

Uptime

100.00%

100.00%

Error rate

0.00%

0.00%

Pricing

billed per second

Rate

per minute

$0.0060

$0.0005

Billing granularity

per 60s

per 1s

1 hour of audio

$0.36

$0.03

100 hours

$36.00

$3.24

1,000 hours

$360.00

$32.40

Capabilities

Feature support

Speaker diarization

Yes

No

Word-level timestamps

Yes

Yes

Code-switching

No

No

Auto-detect language

No

Yes

Live / streaming

Yes

No

Custom vocabulary

No

No

Coverage & deployment

Languages · formats · regions

Languages

19

12

Mode

Batch & Realtime

Batch

Region

United States

Global

Audio formats

mp3
wav
flac
ogg
wma
aac
webm
mp3
wav
flac
m4a
ogg
webm

Max file size

1 GB

25 MB

Max duration

4 h

No limit

Compliance

HIPAA
SOC2
GDPR

—

Frequently asked questions

Is Azure Speech or Whisper Large V3 Turbo more accurate?

Whisper Large V3 Turbo is more accurate, with a 12.9% word error rate versus 15.3% for Azure Speech, on our standardized benchmark.

Which is cheaper, Azure Speech or Whisper Large V3 Turbo?

Whisper Large V3 Turbo is cheaper at $0.0005/min versus $0.0060/min for Azure Speech.

Should you choose Azure Speech or Whisper Large V3 Turbo?

Choose Azure Speech for language coverage; choose Whisper Large V3 Turbo for accuracy, speed, and lower cost.