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OpenAI✕already broken

gpt-5.4-cyber shutdown

GPT-5.4-Cyber. Shutdown date: 2026-10-01. Replacement: The most capable cyber model available to you..

gpt-5.4-cyber shutdown: from its source to your code

developers.openai.comquote checked
The most capable cyber model available to you.from gpt-5.4-cyber
2026-10-0136 days ago
Your code1 thing to find
Nemotron fixes

In its own wordsmatches the page ✓

| Oct 1, 2026 | `gpt-5.4-cyber` | The most capable cyber model available to you. |

developers.openai.com/api/docs/deprecations.mdfrom the provider's own sitechecked 2026-10-27#3fddf4c625

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model ID "gpt-5.4-cyber"

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read by a table · openai-2026-10-01-gpt-5-4-cyber