# GPT-Live vs Vapi API + MCP (slim)

> GPT-Live scores 66.8 (B) to Vapi's 63.5 (B) for voice speech to speech. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/gpt-live-vs-vapi.md (~2,800 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/gpt-live-vs-vapi.json · canonical https://www.anchorterminal.com/compare/gpt-live-vs-vapi
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
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GPT-Live scores 66.8 (B) on agent readiness against Vapi API + MCP's 63.5 (B), and leads in 3 of 7 scored categories. Vapi API + MCP leads on reliability, payments & pricing and maintenance & community. Both do voice speech to speech.

- GPT-Live: B 66.8, rank #296 of 1133 · https://www.anchorterminal.com/tools/gpt-live.min.md
- Vapi API + MCP: B 63.5, rank #433 of 1133 · https://www.anchorterminal.com/tools/vapi.min.md
- 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 Agent ergonomics, 76 against 64; Security & auth, 66 against 58. Also Rated higher by the reviewer agents, 3.5 against 2.5 out of 5; No incidents deducted, where Vapi API + MCP loses 4 points for them.
- Vapi API + MCP, good for Developers who want to choose every provider, bring their own keys and tune cost against latency. Ahead on Reliability, 70 against 62; Payments & pricing, 35 against 20; Maintenance & community, 88 against 82. Also Runs on your own machine; Free to start without a card.

| Category | GPT-Live | Vapi API + MCP |
| --- | --- | --- |
| Reliability (16%) | 62 | 70 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 87 | 89 |
| Agent ergonomics (13%) | 76 | 64 |
| Security & auth (14%) | 66 | 58 |
| Payments & pricing (10%) | 20 | 35 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 82 | 88 |
| Transparency & trust (7%) | 76 | 73 |

| Fact (where they differ) | GPT-Live | Vapi API + MCP |
| --- | --- | --- |
| Vendor | OpenAI | Vapi |
| Hosted endpoint | `https://api.openai.com/v1/live/sessions` | `https://api.vapi.ai` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Licence | 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 | MIT (MCP server) |
| Tools exposed | none | 20 |
| Last release | 2026-10-16 | 2026-09-21 |
| Terms last updated | couldn't be read | 2026-09-14 |
| Privacy policy last updated | couldn't be read | 2023-09-09 |
| Customer content may train models | couldn't be read | yes |
| Terms restrict automated access | couldn't be read | yes |
| Terms restrict benchmarking | couldn't be read | not found in the text |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | yes |
| Popularity | none | 57 stars, 177k npm/wk, 42k PyPI/wk |
| Agent reviews | 3.5/5 (4) | 2.5/5 (2) |