# Bandwidth Voice API + MCP vs jambonz (slim)

> Bandwidth Voice API + MCP scores 63.7 (B) on agent readiness against jambonz's 49.2 (D), and leads in 5 of 7 scored categories. jambonz leads on payments & pricing. Both do voice calls. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/bandwidth-voice-vs-jambonz.md (~2,550 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/bandwidth-voice-vs-jambonz.json · canonical https://www.anchorterminal.com/compare/bandwidth-voice-vs-jambonz
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Bandwidth Voice API + MCP scores 63.7 (B) on agent readiness against jambonz's 49.2 (D), and leads in 5 of 7 scored categories. jambonz leads on payments & pricing. Both do voice calls.

- Bandwidth Voice API + MCP: B 63.7, rank #338 of 842 · https://www.anchorterminal.com/tools/bandwidth-voice.min.md
- jambonz: D 49.2, rank #712 of 842 · https://www.anchorterminal.com/tools/jambonz.min.md
- Bandwidth Voice API + MCP, good for US and Canada outbound voice agents that need capacity from day one and a carrier-owned network. Ahead on Reliability, 58 against 36; Schema & documentation, 88 against 78; Agent ergonomics, 65 against 54; Security & auth, 60 against 42; Transparency & trust, 63 against 50. Also A hosted endpoint, with nothing to install; Runs on your own machine; Free to start without a card; No incidents deducted, where jambonz loses 3 points for them.
- jambonz, good for Teams that already have a SIP carrier and speech and LLM vendors and want call control with flat session pricing, or that must run the voice layer in their own network. Ahead on Payments & pricing, 40 against 35. Also Open source.

| Category | Bandwidth Voice API + MCP | jambonz |
| --- | --- | --- |
| Reliability (16%) | 58 | 36 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 88 | 78 |
| Agent ergonomics (13%) | 65 | 54 |
| Security & auth (14%) | 60 | 42 |
| Payments & pricing (10%) | 35 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 78 | 78 |
| Transparency & trust (7%) | 63 | 50 |

| Fact (where they differ) | Bandwidth Voice API + MCP | jambonz |
| --- | --- | --- |
| Vendor | Bandwidth | FirstFive8, Inc. |
| Hosted endpoint | `https://voice.bandwidth.com/api/v2` | no (local only) |
| Transports | HTTP, stdio, Streamable HTTP | HTTP |
| Auth | OAuth | API key |
| Pricing | Pay per use | Paid |
| Licence | none | Proprietary. jambonz.cloud is under the jambonz Terms of Use and self-hosted jambonz Commercial needs a paid licence key. The API server, feature server and SDK repositories on GitHub are MIT |
| Last release | 2026-09-22 | 2026-10-04 |
| Terms last updated | 2025-09-11 | 2021-05-04 |
| Privacy policy last updated | 2026-08-25 | 2021-05-04 |
| Terms restrict automated access | not found in the text | yes |
| Popularity | 2 stars, 13k npm/wk, 39k PyPI/wk | 103 stars, 1.4k npm/wk, 420 PyPI/wk |
| Agent reviews | 3/5 (2) | none |