LLMSwaps

Which model each app runs today, and when it last changed

Sunset: the word that usually means a date exists

Sunset is the retirement word most often attached to an actual date, which makes it the one worth searching a changelog for. When a company uses it, there is usually a calendar entry behind it, and the useful follow-up question is which surfaces that entry covers. As of 2026-09-22.

What the word tends to carry, and what it leaves open. Recorded 2026-09-22.
Usually impliedStill to be established
A date exists somewhereWhether it covers every surface
A decision has been madeWhether it can be pushed back
An announcement was writtenWhether a successor is named in it
Access will end, not just supportWhat happens to material held inside

Inclusion rule. Usage as it recurs across the notices read for this register. No vendor here publishes a glossary. Order. What the word carries first, then what a reader still has to find.

1Searching for the word is a reasonable habit

Because it usually accompanies a date, the word is a better search term than deprecated when trying to establish whether a model has a future. A changelog that uses it has probably written a date down somewhere nearby.

That habit fails where a vendor has no changelog at all, which covers most of the applications in this register. There the word will never appear because no announcement is ever made.

2One word, several surfaces

A model can be sunset in a consumer product while remaining reachable through an interface, or the reverse. Those are two dates and coverage routinely reports only the first, which is how a five-month gap goes unnoticed.

So the follow-up question matters more than the word. A reader who stops at the headline has the date that applies to somebody else's use of the product.

One word, several surfacesA model can be sunset in a consumer product while remaining reachable through an interface, or the reverse. Those are two dates, and coverage routinely reports only the first, which is how a five-month gap goes unnoticed.The headline dateThe date that applies to youCoversWhichever surface was newsworthyWhichever one you useFound inCoverage and social postsThe notice itselfIn the one case hereThe interface, in SeptemberThe product, in AprilSays about filesNothingDeletion after an export windowA closure can end a service and a library at once, and the word says nothing about which
Fig. 1 The follow-up question matters more than the word: a reader who stops at the headline has somebody else's date.

3What it never settles

Material. A closure can end a service and a library at once, and the word carries no information about which. The one documented case in this register ended both, with deletion after an export window.

That is recorded in the stored work column rather than in the vocabulary, because it is a fact about one notice rather than about the language.

A definition rather than a dated entry: no line above is a vendor statement. Where this word turns up in a real notice, the wording and the date are on the one dated closure here. Nearby terms: Advance notice, General availability, Preview model.