Anthropic’s Claude service maintains strong operational resilience, with official status pages reporting 99.8%+ uptime across components like the API and claude.ai over the past 90 days. Recent November 2026 incidents—elevated errors on Fable and Mythos models on November 10 and degraded performance for Fable 5.1 on November 8—were minor, resolved within minutes to under an hour through rapid fixes and monitoring. These short, contained events align with the market’s 65.5% implied probability for fewer than five days of downtime in the month, reflecting trader confidence in Anthropic’s infrastructure scaling and incident response. No prolonged outages have occurred early in November, though ongoing model updates and load spikes remain potential swing factors for the remainder of the period.