Comparison

Speechmatics vs Vosk

On the evidence we track, Speechmatics leads this comparison with a composite score of 81/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Speechmatics full profile →Vosk full profile →

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★Speechmatics81

Vosk38

Attribute comparison across 2 tools
Attribute	SpeechmaticsLeader	Vosk
Vioscale score	81 / 100medium · 55%	38 / 100low · 28%
Pricing
Free tierpricing.free_tier	✓	-
Modelpricing.model	freemium	-
Price levelpricing.price_level	low	-
Starting pricepricing.starting_price	$0.24	-
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	7	18
Security
Disclosure policysecurity.disclosure_policy	✓	-
Gdprsecurity.gdpr	✓	-
Hipaasecurity.hipaa	✓	-
Iso27001security.iso27001	✓	-
Scorecardsecurity.scorecard	-	3.3
Soc2security.soc2	✓	-
Vulnerabilitiessecurity.vulnerabilities	-	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=vosk&per_page=100 · Last 12m: 0
Adoption
Dependent reposadoption.dependent_repos	-	183
Github starsadoption.github_stars	-	15,076
Activity
Commits last 30dactivity.commits_last_30d	-	1
Release
Cadence daysrelease.cadence_days	-	51
Historyrelease.history	-	20 items
License
Spdxlicense.spdx	-	Apache-2.0
Language
Primarylanguage.primary	-	Jupyter Notebook
Market
Availabilitymarket.availability	Available worldwide · HQ GB	-

Score

Vioscale score

Speechmatics81 / 100medium · 55%

Vosk38 / 100low · 28%

Pricing

Free tier

Speechmatics✓

Vosk–

Model

Speechmaticsfreemium

Vosk–

Price level

Speechmaticslow

Vosk–

Starting price

Speechmatics$0.24

Vosk–

Transparent

Speechmatics✓

Vosk–

Integrations

Count

Speechmatics7

Vosk18

Security

Disclosure policy

Speechmatics✓

Vosk–

Gdpr

Speechmatics✓

Vosk–

Hipaa

Speechmatics✓

Vosk–

Iso27001

Speechmatics✓

Vosk–

Scorecard

Speechmatics–

Vosk3.3

Soc2

Speechmatics✓

Vosk–

Vulnerabilities

Speechmatics–

VoskCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=vosk&per_page=100 · Last 12m: 0

Adoption

Dependent repos

Speechmatics–

Vosk183

Github stars

Speechmatics–

Vosk15,076

Activity

Commits last 30d

Speechmatics–

Vosk1

Release

Cadence days

Speechmatics–

Vosk51

History

Speechmatics–

Vosk20 items

License

Spdx

Speechmatics–

VoskApache-2.0

Language

Primary

Speechmatics–

VoskJupyter Notebook

Market

Availability

SpeechmaticsAvailable worldwide · HQ GB

Vosk–

Capabilities

Feature-by-feature on the axes that matter for speech to text. “-” means undocumented, not absent.

Capability comparison for Speech To Text
Capability	Speechmatics	Vosk
Capabilities
Real time streaming	✓	-
Speaker diarization	✓	-
Custom vocabulary	✓	-
Fine tuning	✓	-
Word timestamps	✓	-
Punctuation formatting	✓	-
Pii redaction	-	-
Vertical model	✓	-
Offline on device	✓	-
Open source	-	-

Capabilities

Real time streaming

Speechmatics✓

Vosk-

Speaker diarization

Speechmatics✓

Vosk-

Custom vocabulary

Speechmatics✓

Vosk-

Fine tuning

Speechmatics✓

Vosk-

Word timestamps

Speechmatics✓

Vosk-

Punctuation formatting

Speechmatics✓

Vosk-

Pii redaction

Speechmatics-

Vosk-

Vertical model

Speechmatics✓

Vosk-

Offline on device

Speechmatics✓

Vosk-

Open source

Speechmatics-

Vosk-

What each one is

The product in its own terms, so the numbers below have context.

Speechmatics

Leader

Speech recognition and synthesis platform offering real-time and batch transcription, audio analysis, and text-to-speech across 55+ languages. Supports flexible deployment with privacy-first design and compliance-ready infrastructure.

Independently observed

Vosk

Vosk enables voice-to-text conversion that runs locally without internet connectivity, supporting over 20 language variants with portable models suitable for mobile and embedded systems. It provides real-time streaming capabilities and allows dynamic vocabulary adjustment.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Speechmatics

Leader

from $0.24/hourUsage-basedFree tier

Usage-based from $0.24/hour; free tier with $100 credit; volume discounts available

FreeFree
- Speech-to-Text (55+ languages)
- Text-to-Speech (English)
- Multi-region cloud options
- 2 concurrent real-time sessions
ProUsage-based from $0.24/hour for Real-time Standard transcription
- Speech-to-Text (55+ languages)
- Text-to-Speech
- Real-time sessions (up to 50 concurrent)
- Speaker diarization
- Custom vocabulary
- +5 more
EnterpriseContact sales
- Unlimited concurrent real-time sessions
- No rate limits
- Custom models and voices
- Custom language development
- SaaS or on-premises or on-device deployment
- +3 more

as of 2026-08-25verify ↗

Vosk

Pricing not documented yet.

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Speechmatics	Vosk
WebPlatforms	✓	✗
iOSPlatforms	✗	✓
AndroidPlatforms	✗	✓
LinuxPlatforms	✗	✓
CLIPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✗
Self-hostedDeployment	✓	✓
On-premiseDeployment	✓	✓
HybridDeployment	✓	✗

Platforms

Web

Speechmatics✓

Vosk✗

iOS

Speechmatics✗

Vosk✓

Android

Speechmatics✗

Vosk✓

Linux

Speechmatics✗

Vosk✓

CLI

Speechmatics✓

Vosk✗

Deployment

Cloud / SaaS

Speechmatics✓

Vosk✗

Self-hosted

Speechmatics✓

Vosk✓

On-premise

Speechmatics✓

Vosk✓

Hybrid

Speechmatics✓

Vosk✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Speechmatics

Leader

7 total

Stenograph CATalyst VP
Adobe Premiere
Zapier
Twilio
Python SDK
JavaScript SDK
.NET SDK

Independently observed

Vosk

18 total

Asterisk
Freeswitch
Jigasi
ROS
openFrameworks
Opencast
IBus
GStreamer
nerd-dictation
dicio-android
openaudiosearch
LVTerminal
Dexter
numenvoice
JustSayIt
OpenVoiceOS
CaptionIt
voice_perception

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.