W
WAmazon Transcribe vs Vosk
Pricing, features, platforms and who each one suits — side by side.
A
Choose Amazon Transcribe if…
- you work on Web
- you're in its core audience: developers building on aws, contact center teams
V
Choose Vosk if…
- you want open source you can self-host or audit
- you work on Linux, Android, iOS
- you're in its core audience: software developers, embedded and iot engineers
Side by side
Feature Amazon Transcribe Vosk
Pricing modelFreemiumFree
Starting price—Free
Free plan
Free trial
API
Open source
Speaker labels
File upload—
PlatformsWeb, APILinux, Android, iOS, API, Self-hosted
CategoryTranscriptionTranscription
CompanyAmazon Web Services, Inc.Alpha Cephei
Based inUnited States—
Founded——
Part ofAmazon.com, Inc.—
Key features
A Amazon Transcribe
- Batch and real-time streaming transcription
- Speaker diarization and automatic language identification
- Custom vocabularies and custom language models
- Automatic redaction of sensitive information
- Call Analytics with sentiment and generative summaries
- Toxicity detection and content moderation
- HIPAA-eligible medical transcription
- Features available in 100+ languages
V Vosk
- Fully offline speech recognition
- Streaming API for real-time transcription
- Speaker identification
- Quick vocabulary reconfiguration
- Compact models of about 50 MB per language
- Larger server models available
- Bindings for Python, Java, C#, JavaScript and more
- Runs on Raspberry Pi, Android and iOS
Plans and prices
From each vendor's site. Prices change — confirm before buying.
Amazon Transcribe
Free TierFree
Standard Batch$0.006/min (US East example)
Standard Streaming$0.01/min (US East example)
Call Analytics (post-call)$0.03/min first 250K min; $0.0186 next 750K; $0.0138 next 4M
Generative call summarization$0.0024/min (Tier 1)
Content redaction$0.0024/min (Tier 1)
Vosk
Open sourceFree
Strengths and limitations
Amazon Transcribe
- Free tier with 60 minutes a month for 12 months
- Billed per second with no minimum charge
- Volume tiers lower the per-minute cost at scale
- Features available in more than 100 languages
- Prices vary by region and the page gives some only as examples
- Redaction and custom language models are not in the free tier
- Requires an AWS account and some developer setup
Vosk
- Open source under the Apache-2.0 license
- Works fully offline, including on lightweight devices
- Supports 20+ languages and dialects
- Small models of about 50 MB each
- A developer toolkit, with no ready-made end-user app
- No commercial plans or pricing published on the site
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Built from each vendor's public website; we haven't tested them hands-on. Editorial policy