openai endoflife.date ·

OpenAI model gpt-5.4-cyber reaches end of life in 19 days

eolopenai-models
deprecation

OpenAI model gpt-5.4-cyber reaches end of life on 2026-10-01 (19 days from now).

Read the original announcement →

https://developers.openai.com/api/docs/deprecations

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