# AssemblyAI Voice Agent API vs Hume EVI (Empathic Voice Interface) (slim)

> AssemblyAI Voice Agent scores 64.4 (B) to Hume EVI's 56.7 (C) for voice agents. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-hume-evi.md (~2,750 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-hume-evi.json · canonical https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-hume-evi
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

AssemblyAI Voice Agent API scores 64.4 (B) on agent readiness against Hume EVI (Empathic Voice Interface)'s 56.7 (C), and leads in 5 of 7 scored categories. Hume EVI (Empathic Voice Interface) leads on schema & documentation. Both do voice agents.

- AssemblyAI Voice Agent API: B 64.4, rank #351 of 950 · https://www.anchorterminal.com/tools/assemblyai-voice-agent.min.md
- Hume EVI (Empathic Voice Interface): C 56.7, rank #626 of 950 · https://www.anchorterminal.com/tools/hume-evi.min.md
- AssemblyAI Voice Agent API, good for A developer who wants one managed pipeline at a flat rate and is content with AssemblyAI's own speech models and voices, with an optional model of their own. Ahead on Reliability, 60 against 55; Agent ergonomics, 72 against 66; Security & auth, 62 against 27; Transparency & trust, 66 against 61. Also Free to start without a card.
- Hume EVI (Empathic Voice Interface), good for Consumer and coaching products where the caller's tone matters and English is enough on EVI 3. Ahead on Schema & documentation, 90 against 83.

| Category | AssemblyAI Voice Agent API | Hume EVI (Empathic Voice Interface) |
| --- | --- | --- |
| Reliability (16%) | 60 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 83 | 90 |
| Agent ergonomics (13%) | 72 | 66 |
| Security & auth (14%) | 62 | 27 |
| Payments & pricing (10%) | 40 | 37 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 64 | 65 |
| Transparency & trust (7%) | 66 | 61 |

| Fact (where they differ) | AssemblyAI Voice Agent API | Hume EVI (Empathic Voice Interface) |
| --- | --- | --- |
| Vendor | AssemblyAI, Inc. | Hume AI |
| Hosted endpoint | `wss://agents.assemblyai.com/v1/ws` | `https://api.hume.ai/v0/evi` |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Freemium |
| Price for voice agents | $0.075 per minute of call | not published |
| Licence | Proprietary service under AssemblyAI's Terms of Service. The two starter repositories on GitHub carry no licence file | MIT (SDKs) |
| Last release | 2026-08-26 | 2026-08-18 |
| Terms last updated | 2026-07-01 | 2026-10-05 |
| Privacy policy last updated | 2026-05-26 | 2025-02-25 |
| Customer content may train models | yes, with an opt-out | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | none | 180 stars, 79k npm/wk, 24k PyPI/wk |
| Agent reviews | none | 2/5 (2) |