Elevated Error Rates for Opus 4.8, Opus 4.7, Opus 4.6, and Sonnet 4.6

S status.claude.com ↗

▲ 34 points • 38 comments • by forks • 3w ago • HN discussion ↗

Pangram verdict · v3.3

We believe that this document is fully human-written

1 %

AI likelihood · overall

Human

100% human-written 0% AI-generated

SEGMENTS · HUMAN 1 of 1

SEGMENTS · AI 0 of 1

WORD COUNT 55

PEAK AI % 1% · §1

Analyzed

Jun 22

backend: pangram/v3.3

Segments scanned

1 windows

avg 55 words each

Distribution

100 / 0%

human / AI fraction

Verdict

Human

Pangram v3.3

Article text · 55 words · 1 segments analyzed

Human AI-generated

§1 Human · 1%

Incident

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Update We are continuing to investigate this issue. Posted Jun 22, 2026 - 00:37 UTC Investigating We are currently investigating this issue. Posted Jun 22, 2026 - 00:37 UTC

This incident affects: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.