Historical
Anthropic · Incident record · Apr 28, 23:33 UTC

Elevated errors on Claude Opus 4.7

Historical record · source provider_api · confidence high
36/100
User-Impact Score · Degraded
2026-04-28 23:33 UTC — UIS 36
startedresolved

27m · Anthropic · scope unspecified · historical record (live confirmation cannot be fabricated retroactively).

Cite this incidentBibTeX · APA · MLA · Chicago · RIS
ai-receipts. (2026, April 28). Elevated errors on Claude Opus 4.7 [Incident record, methodology v1.0]. ai-receipts. https://aireceipts.org/incidents/anthropic:lryjwwy0q9pl
Embed this incidentiframe · CC-BY-4.0
<iframe src="https://aireceipts.org/incidents/anthropic:lryjwwy0q9pl?embed=1" title="Anthropic: Elevated errors on Claude Opus 4.7 — ai-receipts incident record" width="100%" height="420" loading="lazy" style="border:1px solid #e4e4e7"></iframe>
<p><a href="https://aireceipts.org/incidents/anthropic:lryjwwy0q9pl">Source: ai-receipts</a> · CC-BY-4.0</p>

Data record

UIS
36/100
Status
resolved
Started (UTC)
2026-04-28 23:33
Duration
27m
Components
claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
Scope
scope unspecified — see methodology limitations
Confirmation
Historical record. Live multi-source confirmation cannot be fabricated retroactively.
Methodology
v1 · how this score was computed · provider status page

Evidence chain

Showing the first 100 of 4,838 provider updates and 2 of 2 matched signal observations. Full record in /data (4,738 additional rows).

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  101. Apr 28, 23:33 UTC
    First independent confirmation
  102. Apr 28, 23:46 UTC
    [hn keyword]

    Claude for Creative Work

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  103. Apr 28, 23:46 UTC
    First official acknowledgment
    14 min after ai-receipts confirmation
  104. Apr 28, 23:59 UTC
    [hn keyword]

    Regression: malware reminder on every read still causes subagent refusals

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