OpenTranscription
OpenTranscription
RankerModelsPlayground
OpenTranscription
OpenTranscription

One API to every speech-to-text model worth using. Compare them on your audio, route to the best one, pay per second.

Platform status

Product

RankerModelsTranscriptionsPlaygroundBlog

Developers

DocumentationReliabilityAPI VersioningStatus

Legal

Privacy PolicyTerms of ServiceSupport
© 2026 OpenTranscription
Back to Models

Whisper Large V3 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 is fastest; Whisper Large V3 covers the most languages; Soniox STT (Async) is cheapest.

Open both in playground

Verdict · who wins what

Most accurate

Soniox STT (Async)

8.7% WER

Soniox

Fastest

Whisper Large V3

0.3× realtime

OpenAI

Most languages

Whisper Large V3

98 languages

OpenAI

Cheapest

Soniox STT (Async)

$0.0017/min

Soniox

Comparing

2 models · same benchmark

1

Batch

Whisper Large V3

OpenAI

$0.0060/min
#24 · 69.3

OpenAI's Whisper large-v3 model

Use This ModelDetails →

2

Batch

Soniox STT (Async)

Soniox

$0.0017/min
#1 · 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.

Use This ModelDetails →

Overview

30-day benchmark average

Overall score

0–100

69.3

73.7

Accuracy rank

of 35

#24

#1

Word error rate

WER

17.7%

8.7%

Character error rate

CER

13.1%

6.2%

Match error rate

MER

16.6%

8.4%

Word info lost

WIL

21.6%

13.3%

Languages

98

25

Cost vs. accuracy

overall WER vs price

Soniox STT (Async)

Whisper Large V3

field · 33 models

lower-left is better

Accuracy by category

WER · lower is better

code_switching

62.7%
16.0%

conversational

11.2%
12.6%

finance

6.0%
6.3%

general

14.9%
6.6%

legal

2.4%
3.5%

medical

6.6%
1.6%

noisy

36.3%
21.9%

technical

6.5%
4.9%

Accuracy by accent

WER · English

african

24.6%
12.3%

australian

15.4%
12.3%

indian

19.1%
19.1%

uk

3.0%
7.5%

us

3.8%
11.3%

Speed & latency

p50 → p99

Processing speed

× realtime

0.3×

0.1×

Latency p50

3.5s

6.2s

Latency p90

4.3s

6.2s

Latency p99

4.3s

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

$0.0060

$0.0017

Billing granularity

per 1s

per 1s

1 hour of audio

$0.36

$0.10

100 hours

$36.00

$10.08

1,000 hours

$360.00

$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

98

25

Mode

Batch

Batch

Region

United States

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

SOC2
GDPR

—

Frequently asked questions

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

Soniox STT (Async) is more accurate, with a 8.7% word error rate versus 17.7% for Whisper Large V3, on our standardized benchmark.

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

Soniox STT (Async) is cheaper at $0.0017/min versus $0.0060/min for Whisper Large V3.

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

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