Build Voice AI at Scale, from Transcription to Voice Agents

Deepgram’s voice AI platform provides APIs for speech-to-text, text-to-speech, and full speech-to-speech voice agents. Over 200,000+ developers use Deepgram to build voice AI products and features.

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Trusted by the world’s top Enterprises and Startups

The Complete Voice AI Stack

Designed for precision, security, and adaptability, our advanced features optimize transcription accuracy, real-time processing, context awareness, and seamless enterprise integration.

Voice Agent API

Unified API: Combines STT, LLM orchestration & TTS in real-time.
Conversational Control: Advanced barge-in, turn-taking & mid-session flexibility.
Flexible Deployment: Fully managed, single-tenant, VPC or self-hosted; compliant with HIPAA & GDPR.

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Speech to Text API

High performance: 90%+ accuracy, up to 40x faster
Fast: Transcribe in real-time, or an hour of pre-recorded audio in <12 seconds.
Affordable: 2x more affordable vs. cloud providers
Flexible Deployment: On-premises, VPC, or cloud

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Text to Speech API

Real-Time Performance: Sub-200ms latency, scalable concurrency.
Domain-Tuned Accuracy: Industry-specific pronunciations for healthcare, finance, legal & more.
Natural Speech: 40+ authentic voices with localized accents.

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Unmmatched Accuracy

Deepgram leads the industry with the most accurate transcription models in the market across enterprise use cases.

54% accuracy lead over competitors in streaming data.
47% accuracy lead in pre-recorded transcription.
Boost transcription accuracy by fine-tuning up to 100 key terms with Keyterm Prompting.

Real-time Performance

Experience lightning-fast voice processing with sub-300ms response times that make conversations feel natural and uninterrupted. Built for scale, our platform handles thousands of simultaneous voice interactions while delivering consistent low-latency performance for demanding real-time applications.

Superior Cost Efficiency

Superior performance meets unbeatable pricing across our entire voice AI platform:

Nova-3 Transcription: $0.0077/minute (2x more affordable than cloud providers)
Aura-2 Text-to-Speech: $0.030 per 1,000 characters (20-40% less than alternatives)
Voice Agent API: Priced at $4.50/hour + bring-your-own-model discounts (up to 75% more affordable)

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Learn More About the Deepgram Voice AI Platform

The world’s only enterprise-ready, real-time and cost-effective STT, TTS and Voice Agent APIs