Rev AI
The world’s most accurate automated and human-powered speech-to-text platform with advanced NLP capabilities.
Founded: 2010
Company: Rev
Country: United States
Website: https://www.rev.ai
Key Features
- Asynchronous and real-time (streaming) speech-to-text APIs
- 99% accurate human transcription service
- Language identification for 22+ languages
- Sentiment analysis and topic extraction
- Text summarization and translation (context-aware)
- Forced alignment with precise timestamping
Screenshot Preview

AI Output Example
“Audio: Customer service phone call. Result: Full transcript with speaker labels, sentiment analysis highlighting frustration points, and English-to-Spanish translation.”
Pricing
Asynchronous Speech-to-Text
$0.035/min – Transcribe uploaded audio or video files
Streaming Speech-to-Text
$0.045/min – Real-time transcription during events or calls
Human Transcription
$1.50/min – 99% accurate transcripts delivered by professionals
Best For
Milestones & Recognition
- Used by global enterprises for high-volume speech analytics
- Offers both AI and human transcription under one platform
- Trusted by researchers, broadcasters, and data teams