vioscaleAI
Comparison

Deepgram vs whisper.cpp

No clear leader: Deepgram (61.9) and whisper.cpp (57.7) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Deepgram full profile →whisper.cpp full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Deepgram62
whisper.cpp58
Score
vioscaleAI score
Deepgram62 / 100medium · 55%
whisper.cpp58 / 100low · 34%
Pricing
Free tier
Deepgram✓
whisper.cpp✓
Model
Deepgramfreemium
whisper.cppopen_source
Price level
Deepgramhigh
whisper.cppfree
Starting price
Deepgram$4,000
whisper.cpp–
Transparent
Deepgram✓
whisper.cpp✓
Integrations
Count
Deepgram6
whisper.cpp–
Security
Certifications
Gdpr
Deepgram✓
whisper.cpp–
Hipaa
Deepgram✓
whisper.cpp–
Pci
Deepgram✓
whisper.cpp–
Scorecard
Deepgram–
whisper.cpp5.1
Soc2
Deepgram✓
whisper.cpp–
Trust center
Vulnerabilities
Adoption
Dependent repos
Deepgram–
whisper.cpp18
Github stars
Deepgram–
whisper.cpp54,417
Activity
Commits last 30d
Deepgram–
whisper.cpp100
Release
Cadence days
Deepgram–
whisper.cpp14
History
Deepgram–
whisper.cpp20 items
License
Spdx
Deepgram–
whisper.cppMIT
Language
Primary
Deepgram–
whisper.cppC++
Market
Availability
Content
Faq
Deepgram7 items
whisper.cpp5 items

Capabilities

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

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

What each one is

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

Deepgram

A platform providing real-time speech-to-text, text-to-speech, and voice agent APIs with native support for understanding turn-taking, interruptions, and multi-speaker scenarios. Supports 45+ languages with features like speaker identification, smart formatting, and keyword recognition for enterprise and developer use cases.

Independently observed

whisper.cpp

An open-source C/C++ implementation that brings OpenAI's Whisper speech recognition to local devices. It executes entirely offline without network connectivity and integrates into various hardware platforms from mobile to specialized computing systems.

Independently observed

Pricing

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

Deepgram

from $4000/yrUsage-basedFree tier

From $0.0042/min STT. Free $200 credit on signup. Growth plan $4,000+/year with higher limits.

  • Pay As You GoFrom $0.0042/min STT or $0.045/1k chars TTS. Free $200 credit included.
    • Real-time and batch processing
    • 45+ languages
    • Speaker diarization
    • PII redaction
    • Smart formatting
    • +1 more
  • Growth$4,000+/year
    • All public model endpoints
    • Higher concurrency limits
  • EnterpriseContact sales
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
Deepgram✓
whisper.cpp✗
iOS
Deepgram✗
whisper.cpp✓
Linux
Deepgram✗
whisper.cpp✓
CLI
Deepgram✓
whisper.cpp✓
Deployment
Cloud / SaaS
Deepgram✓
whisper.cpp✗
Self-hosted
Deepgram✓
whisper.cpp✓
On-premise
Deepgram✓
whisper.cpp✓

Integrations

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

Deepgram

9 total
  • Zapier
  • Genesys
  • Cisco
  • Avaya
  • Nuance
  • UniMRCP
  • Y Combinator
  • TensorFlow.js
  • AudioCodes VoiceAI Connect
Independently observed

whisper.cpp

Not documented yet.

Still deciding?

Deepgram or whisper.cpp: 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.