Anthropic’s Claude service has shown strong operational stability in early November 2026, with only two brief incidents reported so far: degraded performance on Fable 5.1 lasting about 26 minutes on November 8 and elevated errors on Fable 5.2 and Mythos 5.2 resolved in roughly four minutes on November 10. Official status data reflect 99.8%+ 90-day uptime across claude.ai, the API, and related components hosted on AWS and Google Cloud, consistent with incremental infrastructure scaling for large language models. These short, contained events have reinforced trader consensus around minimal full-day disruptions, producing the 74% implied probability for fewer than five outage days this month. No major releases, capacity events, or external factors have altered the pattern in recent weeks.