OpenAI put a retirement notice on Shutdown date (table 37), reading "System | Recommended replacement".

OpenAIDEPRECATIONADDEDMON SEP 21, 22:25

The line, as the page carries it

+Shutdown date (table 37): "System | Recommended replacement"

The record

DOCUMENThttps://developers.openai.com/api/docs/deprecations
SOURCEopenai-deprecations
ROWShutdown date (table 37)
OPERATIONadded
BEFORENothing was recorded because the row did not exist.
AFTERSystem | Recommended replacement
READ AT2026-09-21T22:25:54.200Z
SIGNALSlifecycle

What went out

    When a lab changes a document

    The engine refetches every registered document on a schedule and files the line that moved. Model cards, system cards, pricing pages, API changelogs and deprecation notices all change without an announcement. Leave an address and Context Window writes when one does.