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Documentation section changed: 2026-09-11: GPT-5.4-Cyber

doc:019fb619-9a96-7dbf-bd33-e06fdf8a22fb::Deprecations/Upcoming deprecations/2026-09-11: GPT-5.4-Cyber
Product
OpenAI API
Source
HTML
Change kind
Section Changed
Detected
Last updated

Deterministic evidence

Before / after

Extracted from OpenAI's published contract. Open the source ↗

−2+22 changes

1 / 2
{
{
"blocks": [
"blocks": [
{
{
"content": "The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026. Migrate to gpt-5.6-cyber before the shutdown date.",
"content": "The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026. Migrate to the most capable cyber model available to you before the shutdown date.",
"type": "paragraph"
"type": "paragraph"
},
},
{
{
"content": "Shutdown date\tModel / system\tRecommended replacement\nOct 1, 2026\tgpt-5.4-cyber\tgpt-5.6-cyber",
"content": "Shutdown date\tModel / system\tRecommended replacement\nOct 1, 2026\tgpt-5.4-cyber\tThe most capable cyber model available to you.",
"type": "table"
"type": "table"
}
}
],
],

Interpreted documentation change

What the vendor announced

The evidence describes a deprecation notice for the gpt-5.4-cyber model with a shutdown date of 2026-10-01 and a recommended replacement. The previous text specified migrating to gpt-5.6-cyber, while the current text generalizes to “the most capable cyber model available to you.” This indicates a change in the stated replacement guidance, but the core deprecation and deadline remain. No new endpoint is specified.

The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026. Migrate to the most capable cyber model available to you before the shutdown date. Shutdown date Model / system Recommended replacement Oct 1, 2026 gpt-5.4-cyber The most capable cyber model available to you.

Vendor source ↗

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Multi-source correlation

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