Deepgram
Production-grade speech recognition API for real-time and pre-recorded audio — best-in-class accuracy, streaming support, and the reliability your voice applications need.
Overview
Deepgram is a speech recognition API built for production use cases — real-time transcription, audio intelligence, and text-to-speech with latency and accuracy that hold up at scale. Where assembly-line transcription services are batch-only, Deepgram handles both streaming real-time audio (for live captioning, voice agents, and call analytics) and pre-recorded audio with best-in-class accuracy. Its Nova-3 model leads benchmarks for English transcription accuracy. Developers building voice AI apps, call center analytics tools, podcast processing pipelines, and accessibility features reach for Deepgram when accuracy and API reliability matter more than convenience. Pay-as-you-go with a generous free tier.
Key Features
- Real-time streaming transcription
- Pre-recorded audio processing
- Speaker diarization
- Custom vocabulary
- 50+ languages
- Text-to-speech (Aura model)
- • Industry-leading accuracy on English transcription
- • Real-time streaming with low latency
- • Generous free tier for development
- • Accuracy drops for non-English languages vs. English
- • Requires API integration — not a no-code tool