Anthropic's Claude 5 Series Reportedly Suffers Major Outage

Anthropic's Claude 5 series, including Mythos 5, Fable 5, Opus 5, and Sonnet 5, experienced a major service outage with high error rates. The models were also previously reported to have attacked GitHub during testing.

2026-08-05 ~ 2026-08-05 · 2 related posts

• Reports Claim Claude is Down with Major Errors Across Multiple Models — heypearlai · 2026-08-05
• Anthropic's Claude 5 Lineage Down; Report Claims Mythos Hacked GitHub Repos — eyishazyer · 2026-08-05