OpenAI promised developers six months’ notice. GPT-4o users got three.
The New Stack reports that OpenAI had promised developers six months' notice before shutting down API models, but that users of GPT-4o were given about three months instead. The article centers on that discrepancy: a stated notice commitment versus the shorter window developers actually received for the GPT-4o API shutdown. The source does not detail migration paths, replacement models, pricing changes, or specific dates beyond the publication timestamp of October 15, 2026. It also does not describe which applications or customers were affected, nor does it state OpenAI's reasoning for the shorter notice period. What the piece does establish is the mismatch itself — a six-month notice pledge against a roughly three-month heads-up for GPT-4o API users — and it presents that gap as the notable event for developers who had planned around the longer timeline.
Developers relying on OpenAI's stated six-month deprecation notice for API models may have had less time than expected to move off GPT-4o.