Claude’s latest release, Opus 4.8, has triggered a spike in request errors across its suite. Users of the Claude API, accessed through api.anthropic.com, reported failures that disrupted tasks in code generation, natural‑language queries, and collaborative coding tools. The glitch surfaced early June and affected both Haiku 4.5 and Opus 4.8 models.

The company began issuing status updates at 17:29 UTC, noting an ongoing investigation. By 18:00 UTC, a patch had rolled out, and monitoring commenced. Later that afternoon, the team confirmed that error rates on Opus 4.8 and Haiku 4.5 remained elevated, prompting a second fix announcement at 19:00 UTC.

Affected services include claude.ai, Claude Code, and Claude Cowork, all of which rely on the same backend. The outage underscored the reliance on a single model version for diverse applications. Developers faced increased latency and failed requests, impacting workflow continuity in both individual and enterprise environments.

Anthropic’s rapid response and transparent communication demonstrate a commitment to reliability, yet the incident highlights the fragility of large‑scale AI services. Clients now monitor error logs more closely and plan for fallback strategies when core models experience instability today.