gpt-4-1106-preview is shut down

Announced: 22 Apr 2026
Effective: passed 23 Oct 2026
Source: the vendor’s own page · last checked 8 Sept 2026

What breaks

Any request naming this model returns an error from 23 October 2026. Pinned model names in code or config are what break, not the SDK — and code that swallows an API error will look healthy and answer nothing.

What to do

Move to gpt-5.6-sol, the substitute OpenAI names for this snapshot.

What the vendor said

OpenAI announced on 22 April 2026 that a set of legacy GPT snapshots would be shut down on 23 October 2026, gpt-4-1106-preview among them. This supersedes the earlier March 2026 date: the shutdown was pushed back, not brought forward.