References 280% CONFIDENCEOverall confidence: 80%How well the pin's source and references back up its dates.Weighted average of how firmly 2 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

• [1]75%
  platform.openai.com/docs/deprecations#2026-09-11-gpt-54-cyber

  platform.openai.com· Posted Sep 20, 2026· Starts Oct 1, 2026 ✓· 50% of score

  OpenAI's^[2] own deprecation page, announced 2026-09-11, gives the shutdown date as 1 October 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.

• [2]85%
  OpenAI deprecations

  platform.openai.com· Added Sep 20, 2026· 50% of score

  OpenAI's^[1] full deprecation index, which lists every announcement and the notice period each model gets; this pin's own section is its source.

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