AssemblyAI
AssemblyAI provides a robust API platform that allows you to integrate advanced speech-to-text, speaker identification, and audio intelligence features into your applications using state-of-the-art AI models.
Rev
Rev provides accurate speech-to-text services including human transcription, automated captions, and foreign subtitles to help you transform your audio and video files into searchable, accessible, and actionable text documents.
Quick Comparison
| Feature | AssemblyAI | Rev |
|---|---|---|
| Website | assemblyai.com | rev.com |
| Pricing Model | Subscription | Subscription |
| Starting Price | Free | $??/month |
| FREE Trial | ✓ 0 days free trial | ✓ 14 days free trial |
| Free Plan | ✘ No free plan | ✘ No free plan |
| Product Demo | ✓ Request demo here | ✓ Request demo here |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2017 | 2010 |
| Headquarters | San Francisco, USA | Austin, USA |
Overview
AssemblyAI
AssemblyAI gives you the tools to build powerful AI features into your products using simple APIs. You can transcribe audio and video files with high accuracy, identify different speakers in a recording, and extract actionable insights like sentiment, summaries, and key topics automatically. It handles the complex heavy lifting of machine learning so you can focus on building your core application.
Whether you are building a meeting assistant, a content moderation tool, or a media analysis platform, you can scale your processing from a few files to millions of hours of audio. The platform supports both asynchronous file processing and real-time streaming, making it a flexible choice for developers and enterprises across industries like telecommunications, healthcare, and media.
Rev
Rev is a versatile speech-to-text platform that helps you convert audio and video into accurate text. Whether you need near-perfect human transcription or rapid, AI-generated drafts, you can upload files or record directly through the mobile app to get your content processed in minutes or hours. It solves the tedious problem of manual note-taking and makes your video content accessible to global audiences through captions and translated subtitles.
You can manage your entire workflow within a browser-based editor, allowing you to polish transcripts while listening to the original audio. The platform serves everyone from individual creators and journalists to large media enterprises, offering specialized tools like an API for developers and a workspace for team collaboration. By integrating with your existing storage tools, it simplifies the way you document meetings, interviews, and video productions.
Overview
AssemblyAI Features
- Speech-to-Text Transcription Convert your audio and video files into accurate text transcripts with support for over 80 different languages.
- Real-Time Streaming Transcribe live audio streams with low latency so you can power captions and voice commands in real-time.
- Speaker Diarization Detect and label different speakers in a single audio file to follow conversations and interviews more effectively.
- Audio Intelligence Extract summaries, detect sentiment, and identify key chapters automatically to understand your content at a deeper level.
- PII Redaction Protect user privacy by automatically identifying and redacting sensitive personal information from your transcripts and audio files.
- Content Moderation Identify hate speech, violence, or sensitive topics in audio recordings to keep your platform safe and compliant.
Rev Features
- Human Transcription. Get 99% accurate transcripts created by professional transcriptionists who capture every word and nuance from your audio files.
- AI Transcription. Generate instant drafts of your recordings using advanced speech recognition that delivers high accuracy at a fraction of the cost.
- Global Subtitles. Reach international audiences by adding translated subtitles to your videos in over 15 different languages with certified accuracy.
- Interactive Transcript Editor. Review and edit your text alongside the audio playback to make quick corrections and highlight important quotes easily.
- Rev Mobile App. Record interviews or meetings on your phone and submit them for transcription immediately while you are on the go.
- Automated Live Captions. Make your Zoom meetings and webinars more accessible with real-time captions that appear as people speak during the session.
Pricing Comparison
AssemblyAI Pricing
- $50 free credit to start
- Core Transcription: $0.37/hr
- Real-time Streaming: $0.47/hr
- Audio Intelligence: $0.15/hr
- No monthly commitment
- Access to all AI models
- Everything in Pay-as-you-go, plus:
- Volume-based discounts
- Dedicated support engineer
- Custom service level agreements
- Advanced security features
- Priority processing queues
Rev Pricing
- Human Transcription at $1.50/min
- AI Transcription at $0.25/min
- English Captions at $1.50/min
- Global Subtitles at $5-12/min
- Full access to transcript editor
- Everything in Pay-as-you-go, plus:
- 20 hours of AI transcription/month
- 5% discount on human orders
- Free automated Zoom/Meet captions
- Customized glossary for AI
- 14-day free trial included
Pros & Cons
AssemblyAI
Pros
- Exceptional accuracy for complex audio and accents
- Extremely easy-to-use API with great documentation
- Fast processing speeds for large batches of files
- Responsive and helpful technical support team
Cons
- Costs can scale quickly for high-volume users
- Real-time latency varies based on internet connection
- Limited customization for specific niche industry vocabularies
Rev
Pros
- Industry-leading accuracy for human-powered transcription services
- Fast turnaround times often exceeding the stated deadlines
- User-friendly interface makes uploading and managing files simple
- Seamless integration with popular video platforms like YouTube
- High-quality mobile app for recording and ordering
Cons
- Human transcription costs can add up for long files
- AI transcription struggles with heavy accents or background noise
- Subscription model may be confusing for occasional users