Deepgram

Deepgram is the end-to-end Voice AI platform: delivering real-time, highly accurate Speech-to-Text (STT), Text-to-Speech (TTS), and conversational Voice Agents via a developer-first API.

Deepgram is your enterprise-grade Voice AI platform, built on a proprietary end-to-end deep learning network for unmatched speed and accuracy. Our core APIs (STT, TTS, and the unified Voice Agent API) handle everything from real-time transcription to synthesizing natural speech. Specifically, models like Nova-3 and Flux deliver 2-4x better accuracy on alphanumeric data than competitors, and batch transcription processes one hour of audio in less than 30 seconds (120x real-time). We support flexible deployment (public cloud, private cloud, or self-hosted) and offer advanced features like diarization (up to 10 speakers) and custom model training, ensuring your voice applications—from contact centers to conversational AI—are fast, precise, and scalable.

https://deepgram.com