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 200,000+ developers use Deepgram to build voice AI products and features.
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.
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.
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.
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)
Trusted by startups and enterprises
Discover the power of our product through real stories.
Deepgram's Nova-3 model is a remarkable leap forward in data extraction. The enhanced contextual information makes transcriptions more actionable, turning data into valuable insights.
Deepgram’s innovative Flux model redefines Speech-to-Text by integrating turn detection, leveraging acoustic and textual cues to accurately determine turn endings.
Deepgram’s launch of Flux is a perfect example of that vision coming to life. By embedding turn-taking directly into recognition, Flux solves one of the hardest challenges in conversational AI.
Where speech recognition and turn detection happen in the same model, solves challenges we've been wrestling with. It's exactly what voice agent developers need, and we’re excited to bring Flux into the Pipecat ecosystem.
We saw a massive jump in accuracy with Nova-3. Previous models recognized only 10% of critical veterinary terms, but with Nova-3 and keyterm prompting, we're seeing a 625% improvement.
I was floored when I tested Nova-3 against dozens of product names that do not exist as real words. Nova-3 boosted cognitive recognition from almost no capability to near 100% accuracy.
As we’ve begun to roll out Deepgram to our customers, we’ve noticed the platform’s distinct ability to quickly and accurately transcribe product and company names.
I’d recommend Deepgram to any B2B SaaS company that’s looking for the best-in-breed transcription and customer service and customer success.
Not only is Deepgram’s technology the most advanced we found, but working with them has been an absolute pleasure.
Talk to a Voice AI Specialist
The world’s only enterprise-ready, real-time and cost-effective STT, TTS and Voice Agent APIs