SMS & Voice APIs · reliability comparison
SignalWire vs Sinch: which is more reliable? (2026)
SignalWire is more reliable than Sinch, scoring 92.1 vs 61.1 out of 100. Over the last 90 days SignalWire reported 3 incidents and Sinch reported 20, with effective uptime of 99.94% and 99.40% respectively. SignalWire resolves incidents faster on average (47m).
Data updated Nov 1, 2026 · How we score
| Metric | SignalWire | Sinch |
|---|---|---|
| Reliability score | 92.1 | 61.1 |
| Rank (SMS & voice APIs) | #2 | #8 |
| Uptime (90 days) | 99.94% | 99.40% |
| Incidents (90 days) | 3 | 20 |
| Partial / major outages | 3 | 3 |
| Avg time to resolve | 47m | 4h 51m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where SignalWire and Sinch differ
- Sinch reported 6.7× as many incidents as SignalWire over the last 90 days (20 vs 3).
- SignalWire fixes problems faster: 47m on average, against 4h 51m for Sinch (6.1× quicker).
- SignalWire's longest outage on record lasted 1h 59m (Aug 14, 2026); Sinch's lasted 5h 56m (Jun 9, 2026).
90-day uptime
SignalWire
Sinch
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
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
Recent Sinch incidents
- MaintenanceNov 1, 2026 · resolved (duration not published)
- MaintenanceOct 29, 2026 · resolved in 15m
- MaintenanceOct 29, 2026 · resolved in 4h
- MaintenanceOct 27, 2026 · resolved in 2h 1m
- MaintenanceOct 26, 2026 · resolved (duration not published)
- MaintenanceOct 26, 2026 · resolved in 1h
Other SMS & voice APIs to consider
- Plivo · #1 · 100% uptime
- Telesign · #3 · 99.91% uptime
- Textmagic · #4 · 99.82% uptime
- Africa's Talking · #5 · 99.80% uptime