Build with 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 650,000+ 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.

Try Voice Agent API

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Unmatched 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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Trusted by startups and enterprises

Discover the power of our product through real stories.

“Twilio’s flexible orchestration capabilities and global communications infrastructure combined with speech recognition powered by Deepgram APIs deliver seamless, low-latency, and human-like AI agent experiences that are powering today’s Voice AI renaissance.”
Andy O'Dower
VP of Product Management, Twilio
"Our voice capabilities powered by Deepgram APIs deliver the accuracy, low latency, and quality our customers need to build reliable, real-time voice agents."
Nikhil Gupta
Founder and CTO, Vapi
“They don't just chase generic benchmarks; they tailor their models to deliver on the metrics that really matter to us.”
Josh Levin
Head of Product, Cresta