AI Chat Assistants · reliability comparison
Microsoft Copilot vs Perplexity: which is more reliable? (2026)
Microsoft Copilot is more reliable than Perplexity, scoring 100.0 vs 84.0 out of 100. Over the last 90 days Microsoft Copilot reported 0 incidents and Perplexity reported 8, with effective uptime of 100% and 99.83% respectively.
Data updated Nov 1, 2026 · How we score
VS
| Metric | Microsoft Copilot | Perplexity |
|---|---|---|
| Reliability score | 100.0 | 84.0 |
| Rank (AI chat assistants) | — | #2 |
| Uptime (90 days) | 100% | 99.83% |
| Incidents (90 days) | 0 | 8 |
| Partial / major outages | 0 | 3 |
| Avg time to resolve | — | 1h 19m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Microsoft Copilot and Perplexity differ
- Microsoft Copilot reported no incidents in the last 90 days, while Perplexity reported 8.
- Perplexity had 3 partial or major outages, compared with 0 for Microsoft Copilot.
90-day uptime
Microsoft Copilot
Perplexity
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Microsoft Copilot incidents
No incidents reported by Microsoft Copilot in the last 90 days.
Recent Perplexity incidents
- MaintenanceOct 13, 2026 · ongoing
Scheduled Computer Maintenance
Affected: Computer
- Degraded performanceOct 9, 2026 · resolved in 37m
Elevated API errors and timeouts
Affected: App, Computer, API, Website
- MaintenanceSep 7, 2026 · ongoing
Status page migration to incident.io
Affected: Website, App, Computer
- Partial outageSep 5, 2026 · resolved in 2h 19m
We have identified few connectors that are impacting users.official update ↗
Affected: Computer
- Major outageSep 3, 2026 · resolved in 40m
Issue with usage based billingofficial update ↗
Affected: Computer
- InformationalAug 31, 2026 · resolved in 34m
Affected: Computer
Other AI chat assistants to consider
- Gemini · #1 · 99.94% uptime
- Grok · #3 · 99.77% uptime
- DeepSeek Chat · #4 · 100% uptime
- Pi · #5 · 99.01% uptime