Rev.ai is a reliable STT API backed by Rev's human transcription heritage, offering async and real-time transcription with speaker diarization.
✓ Pros
- Backed by Rev's human transcription quality baseline
- Reliable async and real-time transcription
- Speaker diarization and custom vocabulary support
- 300 free minutes for new accounts
✗ Cons
- English-only—no multilingual support
- Accuracy slightly below Deepgram Nova-2 on noisy audio
- Fewer AI intelligence features than AssemblyAI
| Free tier | ✓ Free tier |
| Pricing model | usage |
| Price (per minute) | $0.02 USD |
| Features | |
| Languages | en |
| API | ✓ Available Docs ↗ |
| Pricing Plans | Free$0300 minutes free on signup Pay-as-you-go$0.02/min asyncStreaming at $0.021/min EnterpriseCustomVolume discounts, dedicated infrastructure |
| Platforms | |
| Integrations | Webhooks, Python SDK, Node.js SDK, REST API |
| Homepage | https://www.rev.ai |
AI Commentary
Rev.ai benefits from Rev's long history as a human transcription company, providing a quality-focused reputation that resonates with media and legal customers. The API is straightforward to integrate with good SDK support. However, it is English-only and lacks the AI intelligence layer (summaries, sentiment) that AssemblyAI provides. It sits in a competitive middle ground where Deepgram often wins on speed and AssemblyAI on features.