LLM API Providers · reliability comparison
Azure OpenAI vs xAI API: which is more reliable? (2026)
Azure OpenAI is more reliable than xAI API, scoring 100.0 vs 82.1 out of 100. Over the last 90 days Azure OpenAI reported 0 incidents and xAI API reported 5, with effective uptime of 100% and 99.77% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Azure OpenAI | xAI API |
|---|---|---|
| Reliability score | 100.0 | 82.1 |
| Rank (LLM API providers) | — | #5 |
| Uptime (90 days) | 100% | 99.77% |
| Incidents (90 days) | 0 | 5 |
| Partial / major outages | 0 | 5 |
| Avg time to resolve | — | 1h 10m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Azure OpenAI and xAI API differ
- Azure OpenAI reported no incidents in the last 90 days, while xAI API reported 5.
- xAI API had 5 partial or major outages, compared with 0 for Azure OpenAI.
90-day uptime
Azure OpenAI
xAI API
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Azure OpenAI incidents
No incidents reported by Azure OpenAI in the last 90 days.
Recent xAI API incidents
- Partial outageOct 24, 2026 · resolved in <1m
- Major outageSep 22, 2026 · resolved in 26m
[Global (api.x.ai)] Outages across API, Grok.com, and Grok Build
- Partial outageSep 10, 2026 · resolved in 12m
- Major outageSep 3, 2026 · resolved in 3h 39m
- Partial outageAug 17, 2026 · resolved in 1h 31m
Other LLM API providers to consider
- Perplexity API · #1 · 99.94% uptime
- Cohere · #2 · 99.94% uptime
- Groq · #3 · 99.94% uptime
- Cerebras Inference · #4 · 99.88% uptime