GPT-5.4 Cyber — Specs, Pricing & Limits

GPT-5.4 Cyber is gone. OpenAI's deprecations page announced it in September and removed it from the API at the start of October, with a replacement worded as "the most capable cyber model available to you" — in practice, the models of OpenAI's Daybreak program for approved security defenders.

It never had a published price here. When this site first found it, the id appeared only in the raw model list behind the pricing page, every price cell beside it was a dash, and its own model page returned nothing. That record stands: this page documents a model that was listed, never priced, and then withdrawn — not one that was priced and later changed.

Its successors are documented, but access-gated. GPT-5.6 Cyber has a full model page and a published price, and sits behind Daybreak Red, which needs separate approval and provisioning. Daybreak Blue gives approved defenders general-purpose models such as GPT-5.6 Sol with safeguards calibrated for defensive work, at GPT-5.6 Sol's credit rates. None of these is offered in any calculator on this site, because a reader without approval cannot run them at any price.

The table above is what the facts module holds for this id: its retirement and the surfaces checked.