Deepgram provides an enterprise-grade speech-to-text API with sub-millisecond latency for real-time transcription and a batch API for files. It offers speaker diarization, custom vocabulary and supports 30+ languages. Popular for building voice AI applications.
Best for
Developers building real-time voice applications with a high-accuracy transcription API.
Pricing
Ongoing free tier available, no trial required. Paid plans start at $0.
Pros
- Sub-millisecond latency makes it a strong choice specifically for real-time voice applications
- Supports 30+ languages with speaker diarization and custom vocabulary
- Free tier available for developers to test before scaling usage
Cons
- Requires development work to integrate — not a consumer-facing app
- Custom vocabulary and highest accuracy tuning take some setup effort
Tags
apispeech-to-textreal-timedeveloperdiarization
Frequently asked questions
Is Deepgram good for real-time transcription, or just batch processing files?
Both — real-time, low-latency transcription is one of its core strengths, alongside a batch API for processing existing audio files.