Anthropic’s most powerful AI model is having a rough couple of weeks. Claude Opus 4.8 has been experiencing elevated error rates affecting requests across the platform, with the company’s status page confirming an active investigation into the issues.
The problems aren’t exactly new. They’re part of a pattern that’s been building since mid-June 2026, hitting the API, Claude Code, Console, and claude.ai.
A timeline of trouble
The elevated error rates on Opus 4.8 began appearing around June 17, with a documented incident that evening running from approximately 9:59pm PT to 10:41pm PT. That roughly 42-minute window preceded a major availability test on June 24, and the problems have continued since.
Prior outages involving Opus 4.8 have typically lasted between 1 to 1.5 hours each. The reliability issues aren’t confined to the 4.8 release. Similar elevated-error events hit the predecessor model, Opus 4.7, on May 22 and May 25. By late June 2026, multiple Opus and Sonnet models were experiencing elevated error rates.
