Three weeks
OpenAI gave gpt-5.4-cyber a shutdown date of 1 October
OpenAI added a deprecation row dated 11 September: gpt-5.4-cyber leaves the API on 1 October and the named replacement is gpt-5.6-cyber. Unlike the Sora row further down the same page, the replacement column is filled.
Twenty days separate the notice from the shutdown.
What it changes Grep for gpt-5.4-cyber and move it to gpt-5.6-cyber before 1 October.
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