- Start
- Oct 1, 202675% CONFIDENCEfrom the source
OpenAI Retires GPT-5.4-Cyber
- "The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026. Migrate to gpt-5.6-cyber before the shutdown date"[1]
- The deprecation was announced on 2026-09-11, three weeks before the 1 October 2026 shutdown[1]
- The table entry gives shutdown date Oct 1, 2026, model gpt-5.4-cyber, recommended replacement gpt-5.6-cyber[1]
- OpenAI's stated notice periods are at least 6 months for generally available models and at least 3 months for specialized variants of them - the examples given are chat variants such as gpt-5.1-chat-latest, Codex variants such as gpt-5.3-codex and deep research variants such as o3-deep-research - while "If safety or compliance concerns require us to retire a model sooner, we will provide as much notice as reasonably possible"[1]
- Deprecation takes effect immediately on announcement, and "In some cases, developers may be able to provision dedicated capacity for continued access after a model's shutdown date"[1]
References 280% CONFIDENCE
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.
- [1]75%platform.openai.com/docs/deprecations#2026-09-11-gpt-54-cyberplatform.openai.com· Posted Sep 20, 2026· Starts Oct 1, 2026 ✓· 50% of score
OpenAI's[2] own deprecation page, announced 2026-09-11, gives the shutdown date as 1 October 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
- [2]85%OpenAI deprecationsplatform.openai.com· Added Sep 20, 2026· 50% of score
OpenAI's[1] full deprecation index, which lists every announcement and the notice period each model gets; this pin's own section is its source.
Suggest a correction
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.
