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.
OpenAI's[3][4][5] own deprecation page, announced 2026-06-03, gives the shutdown date as 30 November 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
Independent vendor migration guide detailing what exports, what is lost and the pre-shutdown export requirement.[1]
Current canonical location of the deprecations page (the pin's platform.openai[5].com[1][4] URL 301-redirects here); covers Evals, Agent Builder and prompts API entries.
OpenAI's[1][3][5] full deprecation index, which lists every announcement and the notice period each model gets; this pin's own section is its source.
Official developer-community thread with OpenAI[1][3][4] support clarifying Promptfoo config export versus JSONL export.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most. A picture that shows something else, or shows it badly, is looked at too, and moved down or replaced.