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Whisper Large V3 Turbo vs Soniox STT (Async)

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

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Verdict · who wins what

Most accurate

Soniox STT (Async)

8.7% WER

Soniox

Fastest

Whisper Large V3 Turbo

1.0× realtime

Cloudflare

Most languages

Soniox STT (Async)

25 languages

Soniox

Cheapest

Whisper Large V3 Turbo

$0.0005/min

Cloudflare

Comparing

2 models · same benchmark

1

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.

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2

Batch

Soniox STT (Async)

Soniox

$0.0017/min
#2 · 73.7

Soniox async batch transcription — one multilingual model across 60+ languages with speaker diarization, per-word timestamps, and automatic language identification, at a low flat token-based rate.

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Overview

30-day benchmark average

Overall score

0–100

76.7

73.7

Accuracy rank

of 37

#10

#2

Word error rate

WER

12.9%

8.7%

Character error rate

CER

9.2%

6.2%

Match error rate

MER

11.9%

8.4%

Word info lost

WIL

16.3%

13.3%

Languages

12

25

Cost vs. accuracy

overall WER vs price

Soniox STT (Async)

Whisper Large V3 Turbo

field · 35 models

lower-left is better

Accuracy by category

WER · lower is better

code_switching

23.2%
16.0%

conversational

10.0%
12.6%

finance

6.7%
6.3%

general

10.7%
6.6%

legal

2.8%
3.5%

medical

2.1%
1.6%

noisy

36.3%
21.9%

technical

5.2%
4.9%

Accuracy by accent

WER · English

african

24.6%
12.3%

australian

36.9%
12.3%

indian

23.8%
19.1%

uk

6.0%
7.5%

us

9.4%
11.3%

Speed & latency

p50 → p99

Processing speed

× realtime

1.0×

0.1×

Latency p50

5.3s

6.2s

Latency p90

5.3s

6.2s

Latency p99

5.3s

6.2s

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%

100.00%

Error rate

0.00%

0.00%

Pricing

billed per second

Rate

per minute

$0.0005

$0.0017

Billing granularity

per 1s

per 1s

1 hour of audio

$0.03

$0.10

100 hours

$3.24

$10.08

1,000 hours

$32.40

$100.80

Capabilities

Feature support

Speaker diarization

No

Yes

Word-level timestamps

Yes

Yes

Code-switching

No

No

Auto-detect language

Yes

Yes

Live / streaming

No

No

Custom vocabulary

No

No

Coverage & deployment

Languages · formats · regions

Languages

12

25

Mode

Batch

Batch

Region

Global

United States

Audio formats

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

Max file size

25 MB

No limit

Max duration

No limit

5 h

Compliance

—

—

Frequently asked questions

Is Whisper Large V3 Turbo or Soniox STT (Async) more accurate?

Soniox STT (Async) is more accurate, with a 8.7% word error rate versus 12.9% for Whisper Large V3 Turbo, on our standardized benchmark.

Which is cheaper, Whisper Large V3 Turbo or Soniox STT (Async)?

Whisper Large V3 Turbo is cheaper at $0.0005/min versus $0.0017/min for Soniox STT (Async).

Should you choose Whisper Large V3 Turbo or Soniox STT (Async)?

Choose Whisper Large V3 Turbo for speed and lower cost; choose Soniox STT (Async) for accuracy and language coverage.