Rev AI
A developer-first speech-to-text API with async, streaming, and language NLP add-ons.
FreemiumFree planWeb
Last verified Jul 8, 2026
Decision snapshot
Fast-read signals for fit, pricing, and trust.
- Category
- Video and Audio Production
- Best for
- ai transcription tool
- Pricing
- Freemium
- Access
- Free plan available
What is this tool?
Rev AI is a speech-to-text API for developers, offering asynchronous and streaming transcription across many languages, plus a human-transcription option and language NLP APIs like sentiment, topic, and translation. It is aimed at engineering teams adding voice features to their own products. Its developer-first API and accuracy focus distinguish it. Pricing is usage-based, so cost scales with volume and needs verification.
By QT Desk
Read full overviewHide full overview
You call an API to transcribe pre-recorded files asynchronously or live audio via streaming, getting formatted transcripts across many languages, with a human-transcription option for higher accuracy and NLP APIs — language identification, sentiment, topic extraction, translation, and forced alignment — to build on the text.
It suits developers and product teams adding captions, voice analysis, or transcription features to an app, who want an API rather than an interface.
It is built for integration, so it assumes engineering effort, and accuracy still varies with audio quality, accents, and domain terms despite strong language coverage.
Is this right for you?
Quick fit check against how you actually work.
Choose this if
- You're adding voice features to a product
- You need async or streaming transcription
- You want NLP APIs on top of transcripts
- You can build against an API
Consider alternatives if
- You want a ready app, not an API
- You transcribe the occasional file by hand
- You need a free, no-code transcriber
Key features
What you can actually do with this tool.
Async speech-to-text
Transcribes pre-recorded files via API, returning formatted transcripts.
Streaming speech-to-text
Transcribes live audio in real time for interactive features.
Human transcription
Offers a human option when higher accuracy than machine output is needed.
Language NLP APIs
Adds sentiment, topic extraction, translation, and language ID on top of transcripts.
Forced alignment
Aligns text to audio timing, useful for captions and editing.
Broad language coverage
Transcribes across many languages with punctuation and formatting.
Plans & pricing
Pricing tiers and what's included in each.
Rev AI is pay-as-you-go. All new users receive 5 hours of free Reverb ASR credits. Core ASR rates: Reverb Transcription $0.20/hour (English), Reverb Turbo $0.10/hour (English, faster), Reverb Foreign Language $0.30/hour (55+ languages), Whisper Fusion $0.005/minute, Whisper Large $0.005/minute, Forced Alignment $0.003/minute. Human Transcription is $1.99/minute (Rev.com service). AI add-on rates: Language Identification $0.003/minute, Language Translation $0.002/minute (Standard) or $0.025/minute (Premium), Sentiment Analysis $0.0008 per 10 words, Summarization $0.002/minute (Standard) or $0.025/minute (Premium), Topic Extraction $0.0008 per 10 words. Billing rounds to the nearest second with a 15-second minimum. Enterprise pricing is custom with volume discounts and dedicated support. Verified from rev.ai/pricing on 2026-07-08.
Pay-As-You-Go (Reverb)
$0.20/hour
- 5 free hours on signup; Reverb Turbo $0.10/hr; Foreign Language $0.30/hr (55+ languages)
Whisper Models
$0.005/minute
- Whisper Fusion and Whisper Large; English
AI Add-ons
From $0.0008/10 words
- Sentiment Analysis, Summarization, Topic Extraction, Language ID, Translation
Human Transcription
$1.99/minute
- Via Rev.com; higher accuracy, longer turnaround
Enterprise
Custom
- Volume discounts, dedicated account manager, enhanced data security
Pricing last checked: Jul 8, 2026Official pricing pagePricing may have changed. Always verify before purchasing.
How to use this tool
A short path to first value.
Choose the async or streaming API for your case.
Send pre-recorded files or stream live audio.
Receive formatted transcripts across languages.
Add NLP APIs like sentiment or translation if needed.
Use human transcription where accuracy is critical.
Handle usage-based costs as volume scales.
Frequently asked
Common questions about this tool, answered.
Is this an app or an API?
An API — it's built for developers to embed transcription and voice analysis, so it assumes engineering rather than a ready interface.
How accurate is it?
Accuracy is strong but varies with audio quality, accents, and domain terms; a human option exists when machine output isn't enough.
What do the NLP APIs add?
Sentiment, topic, translation, and language ID let you act on the transcript, not just produce text.
How does pricing work?
Costs scale with transcription volume, model choice, and add-ons, so teams should budget from the current Rev AI pricing page.
How it compares
Context for choosing between this tool and alternatives.
Rev AI is a developer API first; next to app-based transcribers, it trades a ready interface for integration and NLP add-ons. TurboScribe offers a no-code app instead; general transcription apps cover manual use. Compare on whether you're building a feature or transcribing files yourself.
Similar AI tools to consider
Other tools that show up for the same kind of work.
Verified against the official siteLast verified Jul 8, 2026