Case · 2026-08-17

Opus recovered. Sonnet stayed for the second act.

Two models, one incident, staggered dignity.

Summary: Status page investigated elevated errors on Claude Opus 5, then reported Opus operational while Claude Sonnet 5 stayed degraded. Fix implemented and incident resolved the same afternoon UTC. Affected claude.ai, API, Claude Code, and Claude Cowork.

Source: status.claude.com · 17 Aug 2026

What landed

On 17 Aug 2026 at 13:56 UTC, status.claude.com began investigating elevated errors on Claude Opus 5.

At 14:25 UTC: Opus 5 operational, Sonnet 5 still degraded. Monitoring at 14:39 UTC. Resolved at 15:29 UTC.

Surfaces named: claude.ai, Claude API, Claude Code, Claude Cowork.

Why it matters

A model-by-model recovery is still an afternoon of 529s if you are on the lagging one. Switching models is not a workaround when both names are in the title.

Satire margin

Opus got a clean bill. Sonnet got a rain check. The status page called it one incident anyway.

Primary source

Status: degraded performance for Claude Opus 5, Claude Sonnet 5 (17 Aug)

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