LLM API Providers · reliability comparison
Mistral API vs xAI API: which is more reliable? (2026)
xAI API is more reliable than Mistral API, scoring 82.0 vs 72.0 out of 100. Over the last 90 days Mistral API reported 16 incidents and xAI API reported 5, with effective uptime of 99.63% and 99.76% respectively. Mistral API resolves incidents faster on average (1h 9m).
Data updated Nov 1, 2026 · How we score
| Metric | Mistral API | xAI API |
|---|---|---|
| Reliability score | 72.0 | 82.0 |
| Rank (LLM API providers) | #7 | #5 |
| Uptime (90 days) | 99.63% | 99.76% |
| Incidents (90 days) | 16 | 5 |
| Partial / major outages | 5 | 5 |
| Avg time to resolve | 1h 9m | 1h 10m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Mistral API and xAI API differ
- Mistral API reported 3.2× as many incidents as xAI API over the last 90 days (16 vs 5).
- Mistral API's longest outage on record lasted 3h 46m (Sep 10, 2026); xAI API's lasted 3h 39m (Sep 3, 2026).
90-day uptime
Mistral API
xAI API
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Mistral API incidents
- Degraded performanceOct 23, 2026 · resolved in 2h 50m
- Degraded performanceOct 13, 2026 · resolved in 27m
- Partial outageOct 12, 2026 · resolved in 35m
- Major outageSep 29, 2026 · resolved in 2h 46m
Elevated error rate on some of our servicesofficial update ↗
- Degraded performanceSep 29, 2026 · resolved in 29m
- Partial outageSep 22, 2026 · resolved in 38m
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