Deepgram is an enterprise-grade Voice AI platform that provides developers and businesses with best-in-class speech-to-text, text-to-speech, and voice agent APIs. The platform is built around three core APIs: Nova-3, its flagship speech-to-text model offering industry-leading accuracy with support for 30+ languages and real-time streaming; Aura-2, a natural-sounding text-to-speech API with 30+ prebuilt voices and pay-per-character pricing; and the Voice Agent API, a unified interface that combines STT, TTS, and LLM orchestration for building end-to-end conversational AI agents without managing separate components. Deepgram's Nova-3 model supports speaker diarization, keyterm prompting, smart formatting, redaction, and multi-channel audio processing, making it the preferred choice for contact centers, healthcare transcription, media indexing, and real-time voice applications. The Voice Agent API supports major LLM providers including OpenAI, Anthropic Claude, Google Gemini, and NVIDIA Nemotron, giving developers flexibility to choose the intelligence layer. In February 2026, Deepgram partnered with IBM to integrate its voice capabilities into IBM watsonx Orchestrate, signaling strong enterprise adoption. The platform offers a generous $200 free credit for new signups with no credit card required, with pay-as-you-go pricing starting at $0.0077/min for STT and $0.030/1K characters for TTS. Deepgram also supports cloud and self-hosted deployment options for enterprises requiring data residency compliance.