Recent infrastructure strains and recurring elevated error rates across Claude models have shaped trader views on September downtime, with two incidents already logged early in the month including a multi-hour partial outage on September 3 affecting Mythos, Fable, and Opus variants. Anthropic's 99.4% claude.ai uptime over the prior 90 days translates to roughly 13 hours of cumulative disruption, driven by demand growth outpacing capacity for its large language models. This pattern of frequent minor and occasional major events, similar to peer AI platforms, supports the tight contest between 5–7 and 8–10 day outcomes as markets weigh whether scaling improvements or ongoing load will prevail through the rest of the month.