# Deepgram Voice Agent API vs Ultravox Realtime API (slim)

> Deepgram Voice Agent API has a score of 68.4 (B) against Ultravox Realtime API's 58.6 (C). Both do voice agent. The largest gap is maintenance & community, 42 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-ultravox.md (~1,650 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-ultravox.json · canonical https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-ultravox
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

Deepgram Voice Agent API has a score of 68.4 (B) against Ultravox Realtime API's 58.6 (C). Both do voice agent. The largest gap is maintenance & community, 42 points.

- Deepgram Voice Agent API: B 68.4, rank #126 of 452 · https://www.anchorterminal.com/tools/deepgram-voice-agent.min.md
- Ultravox Realtime API: C 58.6, rank #279 of 452 · https://www.anchorterminal.com/tools/ultravox.min.md
- Pick Deepgram Voice Agent API for schema & documentation (+6), security & auth (+25), maintenance & community (+42), transparency & trust (+5). Pick Ultravox Realtime API for nothing in particular.

| Category | Deepgram Voice Agent API | Ultravox Realtime API |
| --- | --- | --- |
| Reliability (16%) | 55 | 52 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 84 |
| Agent ergonomics (13%) | 67 | 69 |
| Security & auth (14%) | 71 | 46 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 85 | 43 |
| Transparency & trust (7%) | 80 | 75 |