AI Chat Assistants · reliability comparison
Gemini vs Microsoft Copilot: which is more reliable? (2026)
Microsoft Copilot is more reliable than Gemini, scoring 100.0 vs 88.0 out of 100. Over the last 90 days Gemini reported 1 incident and Microsoft Copilot reported 0, with effective uptime of 99.94% and 100% respectively.
Data updated Nov 1, 2026 · How we score
VS
| Metric | Gemini | Microsoft Copilot |
|---|---|---|
| Reliability score | 88.0 | 100.0 |
| Rank (AI chat assistants) | #1 | — |
| Uptime (90 days) | 99.94% | 100% |
| Incidents (90 days) | 1 | 0 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 7h 22m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Gemini and Microsoft Copilot differ
- Microsoft Copilot reported no incidents in the last 90 days, while Gemini reported 1.
90-day uptime
Gemini
Microsoft Copilot
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Gemini incidents
- Degraded performanceSep 11, 2026 · resolved in 7h 22m
Mitigated intermittent elevated error rates with Gemini 3.1 Pro models on Gemini Web and Gemini App.
Affected: Gemini
Recent Microsoft Copilot incidents
No incidents reported by Microsoft Copilot in the last 90 days.
Other AI chat assistants to consider
- Perplexity · #2 · 99.83% uptime
- Grok · #3 · 99.78% uptime
- DeepSeek Chat · #4 · 100% uptime
- Claude · #5 · 99.25% uptime