Comparison

Speechmatics vs Vosk

On the evidence we track, Speechmatics leads this comparison with a composite score of 73/100. 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 →

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

★Speechmatics73

Vosk48

Attribute comparison across 2 tools
Attribute	SpeechmaticsLeader	Vosk
vioscaleAI score	73 / 100medium · 54%	48 / 100low · 39%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	open_source
Price levelpricing.price_level	low	free
Starting pricepricing.starting_price	$0.01	-
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	4	18
Security
Certificationssecurity.certifications	SOC 2 Type II, ISO/IEC 27001:2022	-
Disclosure policysecurity.disclosure_policy	✓	-
Gdprsecurity.gdpr	✓	-
Hipaasecurity.hipaa	✓	-
Iso27001security.iso27001	✓	-
Scorecardsecurity.scorecard	-	3.3
Soc2security.soc2	✓	-
Trust centersecurity.trust_center	https://www.speechmatics.com/company/articles-and-news/compliance-breaches-share-price	-
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	-	15,174
Activity
Commits last 30dactivity.commits_last_30d	-	3
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 · Popular in GB, US, EU · HQ GB	-
Content
Faqcontent.faq	7 items	5 items

Score

vioscaleAI score

Speechmatics73 / 100medium · 54%

Vosk48 / 100low · 39%

Pricing

Free tier

Speechmatics✓

Vosk✓

Model

Speechmaticsfreemium

Voskopen_source

Price level

Speechmaticslow

Voskfree

Starting price

Speechmatics$0.01

Vosk–

Transparent

Speechmatics✓

Vosk–

Integrations

Count

Speechmatics4

Vosk18

Security

Certifications

SpeechmaticsSOC 2 Type II, ISO/IEC 27001:2022

Vosk–

Disclosure policy

Speechmatics✓

Vosk–

Gdpr

Speechmatics✓

Vosk–

Hipaa

Speechmatics✓

Vosk–

Iso27001

Speechmatics✓

Vosk–

Scorecard

Speechmatics–

Vosk3.3

Soc2

Speechmatics✓

Vosk–

Trust center

Speechmaticshttps://www.speechmatics.com/company/articles-and-news/compliance-breaches-share-price

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–

Vosk15,174

Activity

Commits last 30d

Speechmatics–

Vosk3

Release

Cadence days

Speechmatics–

Vosk51

History

Speechmatics–

Vosk20 items

License

Spdx

Speechmatics–

VoskApache-2.0

Language

Primary

Speechmatics–

VoskJupyter Notebook

Market

Availability

SpeechmaticsAvailable worldwide · Popular in GB, US, EU · HQ GB

Vosk–

Content

Faq

Speechmatics7 items

Vosk5 items

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

A speech-to-text service that converts audio to transcripts, supporting real-time and batch processing with high accuracy, speaker identification, and support for 55+ languages.

Independently observed

Vosk

A lightweight speech recognition toolkit that works offline and supports over 20 languages. It provides real-time transcription with small models (50 MB) optimized for devices ranging from Raspberry Pi to large clusters.

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 $0.01/charactersUsage-basedFree tier

From $0.12/hr for speech-to-text. Free tier with $100 credits.

Melia 1 (General purpose)$0.12/hr
- 55+ languages
- Code-switching
- Language hints
- Language labeling
- Custom dictionary
- +2 more
Enhanced$0.38/hr
- Single-language maximum accuracy
- Custom dictionary
- Advanced punctuation
Medical (Oak 1)$0.15/hr
- Clinical conversations and dictation
- Healthcare vocabulary
- 55+ languages
Standard$0.23/hr
- High volume and cost-sensitive workloads
Linden 1 (Voice agents)Contact sales
Text to Speech$0.011 per 1,000 characters
- First 1 million characters free

as of 2026-10-12verify ↗

Vosk

Open source

as of 2026-10-15verify ↗

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

13 total

Stenograph CATalyst VP
Adobe Premiere
Zapier
Twilio
Python SDK
JavaScript SDK
.NET SDK
Stenograph
Adobe
Microsoft Azure
LiveKit
Vonage
Veritone

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

Still deciding?

Speechmatics or Vosk: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

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