Claude is experiencing a major outage, with users reporting errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8.
The incident began on August 24, 2026, at around 05:06 UTC, and is affecting Claude.ai, Claude Code, and Claude Cowork.
According to Anthropic’s status page, the company first said it was investigating errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8.
It’s not the first time this month, as a major outage was reported on August 16, 2026, affecting Claude.ai, Claude Code, and Claude Cowork.
A few minutes later, Anthropic identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and other Claude models and said they’re working on a fix.
For users, the outage can result in requests not completing, or other errors when using the affected services.
Anthropic has not disclosed what is causing the outage, and both incidents remain under investigation at the time of writing.
Update – We are continuing to work to resolve issues causing elevated requests on multiple models. We will provide an update as soon as possible.
Aug 24, 2026 – 06:42 UTC
Identified – We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and other Claude models and are working on a fix. We will provide an update as soon as possible.
Aug 24, 2026 – 05:27 UTC
Investigating – We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8. We will provide an update as soon as possible.
Aug 24, 2026 – 05:06 UTC