The Most Accurate Speech-to-Text APIs for all of your speech recognition needs

Rev AI's suite of speech-to-text APIs allows businesses to build powerful downstream applications. We train our speech engine on 50,000+ hours of human-transcribed content from a wide range of topics, industries, and accents. The result? You get access to the most accurate speech recognition products on the market.

Get more out of your audio and video with our unmatched accuracy in an easy-to-use API.

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Speech to Text API Sound Waves
Lex Fridman
"Rev brings me joy because it makes my life easier and is simply a pleasure to use, both manually and programatically."
Lex Fridman (AI Researcher at MIT and Host of Lex Fridman Podcast)
What We Offer
Speech to Text
Asynchronous
Asynchronous
  • Submit audio or video files and get Machine transcripts
  • High accuracy
  • 36 languages available
Streaming
Streaming
  • Generates transcription in real-time as audio or video is streamed
  • 9 languages available
Human Transcription
Human Transcription
  • Get the highest level of accuracy from human created transcripts
  • 24 hour turnaround time
  • English only
Insights
Language Identification
Language Identification
  • Predicts the dominant language used in an audio or video file
  • Typically the first step of an NLP pipeline
  • 22 languages available
Topic Extraction
Topic Extraction
  • Identify key topics in text
  • Great for auto-tagging
  • English only
Sentiment Analysis
Sentiment Analysis
  • Get positive, negative, and neutral statements from text
  • English only
Why Rev AI
Why Rev AI
Lowest Word Error Rate, Highest Accuracy
Rev AI consistently outperforms other speech to text providers behind over 3 million hours of training.
Least Bias for Gender and Ethnic accents
Rev AI has the lowest WER for a variety of ethnicities, nationalities, and genders.
More Languages with lower WER
With 36 languages, address demand from customers around the globe.
Delivers the most readable transcripts
Transcripts have the highest readability, including proper grammar, punctuation, phone numbers, and addresses.
All in one STT and NLP solution
Build better products with the full range of Machine and Human Transcription with added insights
World class Security Standards
Get the highest level of data control and security with SOC II, HIPAA, GDPR, and PCI compliance.
Overcome the limits of spoken word
Asynchronous
Speech to Text API
Audio transcription for pre-recorded audio.
Streaming
Speech to Text API
Real-time audio transcription.
Insights
Language Identification, Topic Extraction, Sentiment Analysis
Go beyond Speech to Text with actionable insights.

Rev AI's English Transcript Accuracy

Rev AI's English Transcript Word Error Rate (WER)

WER
Accuracy
Best-in-class accuracy
When transcription accuracy matters, you can count on Rev AI.
See how we calculated these results
Benefits
Best-in-class accuracy
Best-in-class accuracy
We train our speech models on 50,000+ hours of human-transcribed audio content to produce the most accurate API-driven, automated speech recognition engine.
See how Rev AI compares to the competition
Ease of Implementation
Ease of Implementation
Set-up and see results within an hour. Our collection of SDKs get you up and running in no time.
Flexible Deployment
Flexible Deployment
Deploy Rev AI's speech-to-text engine in the cloud or on-prem according to your needs.
Reliability
Reliability
We maintain 99.99% uptime and are on call to respond to security alerts and events.
Security
Security
We handle your data with the care it deserves. All files are encrypted both at rest and in transit via industry best-practices.
Learn More
Learn from your audio
Learn from your audio
Drill into insights with advanced punctuation, per-word confidence scores, the industry's largest custom vocabulary, and speaker diarization.
Simple integration
Our easy-to-use API is designed by developers for developers. We provide you with SDKs, comprehensive documentation, and expert support so you can get started in minutes. All you need to generate your first transcript is an access token.
Explore Documentation
Python
Node
curl

Transcend barriers of communication with Rev AI

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