AI Voice Agent Platform
D
Deepgram
Foundational voice AI APIs powering STT, TTS, and autonomous voice agents for 1,300+ organizations at unicorn scale.
The infrastructure layer beneath much of the voice AI category. Nova-3 STT and Aura-2 TTS power Retell, Vapi, and more. Voice Agent API is production-ready but developer-only.
Pricing
$0.0077 /min
STT: $0.0077/min (Nova-3 Pay-as-you-go); $0.0065/min (Growth plan). TTS Aura-2: $0.030/1k chars. Voice Agent API: $4.50/hr flat rate. Free $200 credit on signup; no credit card required. Growth plan requires $4K+/year prepaid.
Free tier
Usage-based Custom enterprise
View pricing page →
Verified April 2026
Capabilities
| Capability | Deepgram |
|---|---|
| Transcription | ✓ |
| Summarization | ✓ |
| Sentiment Analysis | ✓ |
| Real-Time Agent Assist | ✗ |
| Autonomous Voice Agent | ✓ |
| Virtual Agent (Chat) | ✗ |
| Conversation Intelligence | ✓ |
| Automated QA | ✗ |
| Intelligent Routing | ✗ |
| Predictive Dialer | ✗ |
| Voice Cloning | ✗ |
| Multilingual | ✓ |
| Coaching Workflows | ✗ |
| Workforce Management | ✗ |
Compliance & Security
Data residency: US, EU
Integrations
CRM
salesforcehubspot
Helpdesk
servicenow
Telephony
twilioamazon connect
AI Models
openaianthropicgoogle vertexaws bedrockazure openai
Other
IBM watsonx OrchestrateAmazon SageMakerAmazon LexKore.aiCrestaVapi
API documented
Reviews & Recognition
Alternatives to Deepgram
Frequently asked questions about Deepgram
- What is Deepgram?
- The infrastructure layer beneath much of the voice AI category. Nova-3 STT and Aura-2 TTS power Retell, Vapi, and more. Voice Agent API is production-ready but developer-only.
- How much does Deepgram cost?
- Deepgram starts at $0.0077/min. STT: $0.0077/min (Nova-3 Pay-as-you-go); $0.0065/min (Growth plan). TTS Aura-2: $0.030/1k chars. Voice Agent API: $4.50/hr flat rate. Free $200 credit on signup; no credit card required. Growth plan requires $4K+/year prepaid. (pricing verified April 2026).
- What security and compliance certifications does Deepgram have?
- Deepgram is compliant with SOC 2 Type II, HIPAA, PCI DSS, and GDPR. A Business Associate Agreement (BAA) is available for healthcare deployments.
- What channels does Deepgram support?
- Deepgram supports voice.
- What are the top alternatives to Deepgram?
- Alternatives to Deepgram include Retell, Elevenlabs, Vapi, and Google Contact Center Ai. See the alternatives section above for full profiles of each.