Deepgram vs Ultravox: Which Is Better for Your Team in 2026?
Deepgram and Ultravox are both used for ai voice agents. Below we compare them on pricing, AI capabilities, compliance, and the use cases each one fits best — all from verified vendor data.
Choose Deepgram if…
- Developer teams building voice agents who want the fastest, most accurate STT/TTS in the stack
- Enterprise platforms needing white-label voice AI with SOC 2 / HIPAA compliance out of the box
- Organizations already in the AWS ecosystem (Connect, SageMaker, Lex) wanting native voice AI
- Contact centers requiring high-accuracy multilingual transcription for QA and analytics
Choose Ultravox if…
- Developer teams building voice agents who want to eliminate the 3-stage ASR→LLM→TTS pipeline overhead
- Open-source-first engineering teams who want to evaluate or self-host the model weights before committing to the managed API
- Startups needing a fast path to PSTN voice agents with built-in Twilio/Telnyx/Plivo and no infrastructure work
- Teams building on Pipecat or LiveKit who want a drop-in speech-to-speech service with the best benchmark scores
Deepgram vs Ultravox: feature comparison
| Feature | Deepgram | Ultravox |
|---|---|---|
| At a glance | ||
| Category | AI voice agent platform | AI voice agent platform |
| Best fit | Smb, Mid market, Enterprise | Smb, Mid market, Enterprise |
| Deployment | Cloud, Self hosted, Private cloud | Cloud, Self hosted |
| Channels | Voice | Voice |
| Pricing & ratings | ||
| Starting price | From $0.0077/min | From $0.05/min |
| Free trial | No | No |
| User rating | 4.6/5 (325 G2 reviews) | — |
| AI capabilities | ||
| Autonomous voice agent | Yes | Yes |
| Real-time agent assist | No | No |
| Conversation intelligence | Yes | No |
| Automated QA | No | No |
| Intelligent routing | No | No |
| Compliance | ||
| SOC 2 Type II | Yes | No |
| HIPAA | Yes | No |
| PCI DSS | Yes | No |
| GDPR | Yes | No |
Deepgram vs Ultravox: frequently asked questions
- What is the difference between Deepgram and Ultravox?
- 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. By contrast, Speech-native LLM with a managed API — Ultravox v0.7 (GLM 4.6) skips ASR and TTS stages entirely. #1 on VoiceBench. Developer-only; no no-code builder; compliance certs unconfirmed.
- Is Deepgram or Ultravox cheaper?
- Deepgram starts at $0.0077/min and Ultravox starts at $0.05/min. Compare the full pricing breakdown above, since seat minimums and add-ons affect total cost.