Historical
Anthropic · Incident record · Apr 28, 13:29 UTC

Elevated errors on Claude Sonnet 4.5

Historical record · source provider_api · confidence high
30/100
User-Impact Score · Degraded
2026-04-28 13:30 UTC — UIS 30
startedresolved

20m · 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 Sonnet 4.5 [Incident record, methodology v1.0]. ai-receipts. https://aireceipts.org/incidents/anthropic:x1y91zcb2rp2
Embed this incidentiframe · CC-BY-4.0
<iframe src="https://aireceipts.org/incidents/anthropic:x1y91zcb2rp2?embed=1" title="Anthropic: Elevated errors on Claude Sonnet 4.5 — ai-receipts incident record" width="100%" height="420" loading="lazy" style="border:1px solid #e4e4e7"></iframe>
<p><a href="https://aireceipts.org/incidents/anthropic:x1y91zcb2rp2">Source: ai-receipts</a> · CC-BY-4.0</p>

Data record

UIS
30/100
Status
resolved
Started (UTC)
2026-04-28 13:29
Duration
20m
Components
Claude API (api.anthropic.com)
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

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