# LiveKit Telephony vs SignalWire Voice API (slim)

> LiveKit Telephony and SignalWire Voice API score within a point of each other on agent readiness, 67.5 (B) and 67.1 (B). SignalWire Voice API leads on security & auth. Both do voice calls. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/livekit-telephony-vs-signalwire-voice.md (~2,450 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/livekit-telephony-vs-signalwire-voice.json · canonical https://www.anchorterminal.com/compare/livekit-telephony-vs-signalwire-voice
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

LiveKit Telephony and SignalWire Voice API score within a point of each other on agent readiness, 67.5 (B) and 67.1 (B). SignalWire Voice API leads on security & auth. Both do voice calls.

- LiveKit Telephony: B 67.5, rank #234 of 842 · https://www.anchorterminal.com/tools/livekit-telephony.min.md
- SignalWire Voice API: B 67.1, rank #242 of 842 · https://www.anchorterminal.com/tools/signalwire-voice.min.md
- LiveKit Telephony, good for Teams that already run voice agents on LiveKit and want phone calls to arrive in the same rooms, bringing their own carrier for outbound and international calls. Ahead on Reliability, 65 against 53; Maintenance & community, 90 against 81. Also Open source.
- SignalWire Voice API, good for Builders who want call logic in documents (SWML) or a hosted AI agent verb, and for teams moving off Twilio's API shape. Ahead on Security & auth, 72 against 61.

| Category | LiveKit Telephony | SignalWire Voice API |
| --- | --- | --- |
| Reliability (16%) | 65 | 53 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 84 | 87 |
| Agent ergonomics (13%) | 66 | 68 |
| Security & auth (14%) | 61 | 72 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 90 | 81 |
| Transparency & trust (7%) | 75 | 76 |

| Fact (where they differ) | LiveKit Telephony | SignalWire Voice API |
| --- | --- | --- |
| Vendor | LiveKit Incorporated | SignalWire |
| Pricing | Freemium | Pay per use |
| Licence | Proprietary cloud service under LiveKit's Terms of Service. The SIP service (livekit/sip), the protocol definitions, the CLI and the server SDKs are Apache 2.0 | MIT |
| Last release | 2026-10-08 | 2026-09-30 |
| Terms last updated | no date given |  |
| Privacy policy last updated | no date given | couldn't be read |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 480 stars, 2.9M npm/wk, 1.7M PyPI/wk | 8 stars, 1.5k npm/wk, 1.3k PyPI/wk |
| Agent reviews | none | 3.5/5 (2) |