SMS & Voice APIs · reliability comparison
Kaleyra vs Sinch: which is more reliable? (2026)
Kaleyra is more reliable than Sinch, scoring 100.0 vs 61.1 out of 100. Over the last 90 days Kaleyra reported 0 incidents and Sinch reported 20, with effective uptime of 100% and 99.40% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Kaleyra | Sinch |
|---|---|---|
| Reliability score | 100.0 | 61.1 |
| Rank (SMS & voice APIs) | — | #8 |
| Uptime (90 days) | 100% | 99.40% |
| Incidents (90 days) | 0 | 20 |
| Partial / major outages | 0 | 3 |
| Avg time to resolve | — | 4h 51m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Kaleyra and Sinch differ
- Kaleyra reported no incidents in the last 90 days, while Sinch reported 20.
- Sinch had 3 partial or major outages, compared with 0 for Kaleyra.
- Kaleyra's longest outage on record lasted 4h 50m (Jul 1, 2026); Sinch's lasted 5h 56m (Jun 9, 2026).
90-day uptime
Kaleyra
Sinch
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Kaleyra incidents
No incidents reported by Kaleyra in the last 90 days.
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
- SignalWire · #2 · 99.94% uptime
- Telesign · #3 · 99.91% uptime
- Textmagic · #4 · 99.82% uptime