AI Chat Assistants · reliability comparison
Grok vs Perplexity: which is more reliable? (2026)
Grok and Perplexity are effectively tied on reliability (83.4 vs 84.0). Over the last 90 days Grok reported 4 incidents and Perplexity reported 8, with effective uptime of 99.78% and 99.83% respectively. Grok resolves incidents faster on average (1h 19m).
Data updated Nov 2, 2026 · How we score
| Metric | Grok | Perplexity |
|---|---|---|
| Reliability score | 83.4 | 84.0 |
| Rank (AI chat assistants) | #3 | #2 |
| Uptime (90 days) | 99.78% | 99.83% |
| Incidents (90 days) | 4 | 8 |
| Partial / major outages | 4 | 3 |
| Avg time to resolve | 1h 19m | 1h 19m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Grok and Perplexity differ
- Perplexity reported 2× as many incidents as Grok over the last 90 days (8 vs 4).
- Grok had 4 partial or major outages, compared with 3 for Perplexity.
- Grok's longest outage on record lasted 3h 39m (Sep 3, 2026); Perplexity's lasted 4h 31m (Jun 4, 2026).
90-day uptime
Grok
Perplexity
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
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
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: Computer, Website, App
- 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
- DeepSeek Chat · #4 · 100% uptime
- Claude · #5 · 99.25% uptime
- Pi · #6 · 99.01% uptime