September 15, 2026 · started 09:49 UTC

Anthropic outage.

Anthropic (Claude) reported degraded for 1h 27m, then recovered. The provider titled it: “Intermitted error spikes for Claude Mythos 5.1 and Claude Fable 5.1”.

1h 27mduration

Degradedworst reported level

09:49 UTCSeptember 15, 2026

Timeline

09:49 UTC — operational → degraded Intermitted error spikes for Claude Mythos 5.1 and Claude Fable 5.1
11:16 UTC — back to operational All Systems Operational

As published on Anthropic's official status page, observed by our poller. Times are UTC. See current Anthropic status, its RSS feed, or all recorded outages.