SMS & Voice APIs · reliability comparison
Plivo vs SignalWire: which is more reliable? (2026)
Plivo is more reliable than SignalWire, scoring 99.6 vs 92.1 out of 100. Over the last 90 days Plivo reported 1 incident and SignalWire reported 3, with effective uptime of 100% and 99.94% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Plivo | SignalWire |
|---|---|---|
| Reliability score | 99.6 | 92.1 |
| Rank (SMS & voice APIs) | #1 | #2 |
| Uptime (90 days) | 100% | 99.94% |
| Incidents (90 days) | 1 | 3 |
| Partial / major outages | 0 | 3 |
| Avg time to resolve | — | 47m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Plivo and SignalWire differ
- SignalWire reported 3× as many incidents as Plivo over the last 90 days (3 vs 1).
- SignalWire had 3 partial or major outages, compared with 0 for Plivo.
- Plivo's longest outage on record lasted 2h 10m (Jul 11, 2026); SignalWire's lasted 1h 59m (Aug 14, 2026).
90-day uptime
Plivo
SignalWire
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Plivo incidents
- InformationalAug 25, 2026 · resolved in 6h 51m
Voice Call Webhook Delivery Degradation
Affected: REST APIs and XML, PSTN Calls
Recent SignalWire incidents
- Partial outageOct 23, 2026 · resolved in 10m
Dashboard analytics unavailable
Affected: Website
- Partial outageOct 5, 2026 · resolved in 14m
Resolved: underlying infrastructure issue resulted in an interruption to all services.
Affected: AI, APIs, MMS, SIP Connectivity, SMS, Video and Conferencing +1 more
- Partial outageAug 14, 2026 · resolved in 1h 59m
Degraded: outbound calls and fax
Affected: APIs
Other SMS & voice APIs to consider
- Telesign · #3 · 99.91% uptime
- Textmagic · #4 · 99.82% uptime
- Africa's Talking · #5 · 99.80% uptime
- Infobip · #6 · 99.73% uptime