Historical
OpenAI · Incident record · May 15, 16:11 UTC

GPT5.5 Performance Degradation

Historical record · source provider_api · confidence high
17/100
User-Impact Score · Informational
2026-05-15 16:51 UTC — UIS 17
startedresolved

32h 4m · OpenAI · scope unspecified · historical record (live confirmation cannot be fabricated retroactively).

Cite this incidentBibTeX · APA · MLA · Chicago · RIS
ai-receipts. (2026, May 15). GPT5.5 Performance Degradation [Incident record, methodology v1.0]. ai-receipts. https://aireceipts.org/incidents/openai:01KRP6FM6HSKWB3MS1EJTY6AT4
Embed this incidentiframe · CC-BY-4.0
<iframe src="https://aireceipts.org/incidents/openai:01KRP6FM6HSKWB3MS1EJTY6AT4?embed=1" title="OpenAI: GPT5.5 Performance Degradation — ai-receipts incident record" width="100%" height="420" loading="lazy" style="border:1px solid #e4e4e7"></iframe>
<p><a href="https://aireceipts.org/incidents/openai:01KRP6FM6HSKWB3MS1EJTY6AT4">Source: ai-receipts</a> · CC-BY-4.0</p>

Data record

UIS
17/100
Status
resolved
Started (UTC)
2026-05-15 16:11
Duration
32h 4m
Components
—
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 10,275 provider updates and 4 of 4 matched signal observations. Full record in /data (10,175 additional rows).

  1. May 15, 16:11 UTC
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  101. May 15, 16:11 UTC
    First independent confirmation
  102. May 15, 16:38 UTC
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    OpenAI is connecting ChatGPT to bank accounts via Plaid

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  103. May 15, 16:38 UTC
    First official acknowledgment
    28 min after ai-receipts confirmation
  104. May 15, 16:51 UTC
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    Bun Rust rewrite: "codebase fails basic miri checks, allows for UB in safe rust"

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  105. May 16, 11:34 UTC
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    OpenClaw Creator Spent $1.3M on OpenAI Tokens in 30 Days

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  106. May 16, 20:14 UTC
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    OpenAI and Government of Malta partner to roll out ChatGPT Plus to all citizens

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