AI Chat Assistants · reliability comparison
Gemini vs Grok: which is more reliable? (2026)
Gemini is more reliable than Grok, scoring 88.0 vs 83.4 out of 100. Over the last 90 days Gemini reported 1 incident and Grok reported 4, with effective uptime of 99.94% and 99.77% respectively. Grok resolves incidents faster on average (1h 19m).
Data updated Nov 1, 2026 · How we score
| Metric | Gemini | Grok |
|---|---|---|
| Reliability score | 88.0 | 83.4 |
| Rank (AI chat assistants) | #1 | #3 |
| Uptime (90 days) | 99.94% | 99.77% |
| Incidents (90 days) | 1 | 4 |
| Partial / major outages | 0 | 4 |
| Avg time to resolve | 7h 22m | 1h 19m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Gemini and Grok differ
- Grok reported 4× as many incidents as Gemini over the last 90 days (4 vs 1).
- Grok had 4 partial or major outages, compared with 0 for Gemini.
- Grok fixes problems faster: 1h 19m on average, against 7h 22m for Gemini (5.6× quicker).
- Gemini's longest outage on record lasted 3d (Feb 18, 2026); Grok's lasted 3h 39m (Sep 3, 2026).
90-day uptime
Gemini
Grok
- 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 Grok incidents
- Partial outageOct 30, 2026 · resolved in 1h 3m
- Major outageOct 7, 2026 · resolved in 6m
- Major outageSep 22, 2026 · resolved in 26m
- Major outageSep 3, 2026 · resolved in 3h 39m
Other AI chat assistants to consider
- Perplexity · #2 · 99.83% uptime
- DeepSeek Chat · #4 · 100% uptime
- Pi · #5 · 99.01% uptime
- Claude · #6 · 99.25% uptime