vioscale
Comparison

Speechmatics vs whisper.cpp

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 →whisper.cpp full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
★Speechmatics81
whisper.cpp69
Score
Vioscale score
Speechmatics81 / 100medium · 55%
whisper.cpp69 / 100low · 24%
Pricing
Free tier
Speechmatics✓
whisper.cpp✓
Model
Speechmaticsfreemium
whisper.cppcommercial
Price level
Speechmaticslow
whisper.cppfree
Starting price
Speechmatics$0.24
whisper.cpp–
Transparent
Speechmatics✓
whisper.cpp✓
Integrations
Count
Speechmatics7
whisper.cpp–
Security
Disclosure policy
Speechmatics✓
whisper.cpp–
Gdpr
Speechmatics✓
whisper.cpp–
Hipaa
Speechmatics✓
whisper.cpp–
Iso27001
Speechmatics✓
whisper.cpp–
Scorecard
Speechmatics–
whisper.cpp5.1
Soc2
Speechmatics✓
whisper.cpp–
Vulnerabilities
Adoption
Dependent repos
Speechmatics–
whisper.cpp18
Github stars
Speechmatics–
whisper.cpp53,196
Activity
Commits last 30d
Speechmatics–
whisper.cpp100
Release
Cadence days
Speechmatics–
whisper.cpp15
History
Speechmatics–
whisper.cpp20 items
License
Spdx
Speechmatics–
whisper.cppMIT
Language
Primary
Speechmatics–
whisper.cppC++
Market
Availability

Capabilities

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

Capabilities
Real time streaming
Speechmatics✓
whisper.cpp-
Speaker diarization
Speechmatics✓
whisper.cpp-
Custom vocabulary
Speechmatics✓
whisper.cpp-
Fine tuning
Speechmatics✓
whisper.cpp-
Word timestamps
Speechmatics✓
whisper.cpp-
Punctuation formatting
Speechmatics✓
whisper.cpp-
Pii redaction
Speechmatics-
whisper.cpp-
Vertical model
Speechmatics✓
whisper.cpp-
Offline on device
Speechmatics✓
whisper.cpp-
Open source
Speechmatics-
whisper.cpp-

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

whisper.cpp

An open-source library that provides speech-to-text transcription capabilities, ported from OpenAI's Whisper model. It supports various hardware accelerators and runs on multiple platforms with a command-line interface.

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 verify ↗

whisper.cpp

Open sourceFree tier
as of verify ↗

Platform & deployment

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

Platforms
Web
Speechmatics✓
whisper.cpp✗
iOS
Speechmatics✗
whisper.cpp✓
Android
Speechmatics✗
whisper.cpp✓
macOS
Speechmatics✗
whisper.cpp✓
Linux
Speechmatics✗
whisper.cpp✓
CLI
Speechmatics✓
whisper.cpp✓
Deployment
Cloud / SaaS
Speechmatics✓
whisper.cpp✗
Self-hosted
Speechmatics✓
whisper.cpp✓
On-premise
Speechmatics✓
whisper.cpp✗
Hybrid
Speechmatics✓
whisper.cpp✗

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

whisper.cpp

Not documented yet.

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