# AssemblyAI Voice Agent API vs GPT-Live (slim)

> GPT-Live scores 66.8 (B) to AssemblyAI Voice Agent's 64.4 (B) for voice agents. Prices, MCP, x402, uptime and agent notes side by side.

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GPT-Live scores 66.8 (B) on agent readiness against AssemblyAI Voice Agent API's 64.4 (B), and leads in 6 of 7 scored categories. AssemblyAI Voice Agent API leads on payments & pricing. Both do voice agents.

- AssemblyAI Voice Agent API: B 64.4, rank #387 of 1133 · https://www.anchorterminal.com/tools/assemblyai-voice-agent.min.md
- GPT-Live: B 66.8, rank #296 of 1133 · https://www.anchorterminal.com/tools/gpt-live.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 Payments & pricing, 40 against 20. Also Free to start without a card.
- GPT-Live, good for Teams who want a voice front end that keeps talking while a separate backend reasons and runs tools, with WebRTC, WebSocket and SIP from one vendor and a flat per-minute voice price. Ahead on Maintenance & community, 82 against 64; Transparency & trust, 76 against 66.

| Category | AssemblyAI Voice Agent API | GPT-Live |
| --- | --- | --- |
| Reliability (16%) | 60 | 62 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 83 | 87 |
| Agent ergonomics (13%) | 72 | 76 |
| Security & auth (14%) | 62 | 66 |
| Payments & pricing (10%) | 40 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 64 | 82 |
| Transparency & trust (7%) | 66 | 76 |

| Fact (where they differ) | AssemblyAI Voice Agent API | GPT-Live |
| --- | --- | --- |
| Vendor | AssemblyAI, Inc. | OpenAI |
| Hosted endpoint | `wss://agents.assemblyai.com/v1/ws` | `https://api.openai.com/v1/live/sessions` |
| 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 | Proprietary service. The service terms on openai.com were not read. The Python SDK is Apache-2.0, and the OpenAPI description and the OpenAI Live Console sample are MIT |
| Last release | 2026-08-26 | 2026-10-16 |
| Terms last updated | 2026-07-01 | couldn't be read |
| Privacy policy last updated | 2026-05-26 | couldn't be read |
| Customer content may train models | yes, with an opt-out | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |