Shutdown calendar / OpenAI API
gpt-5.4-cyber shuts down on Oct 1, 2026
That is 4 days from the last dataset check (Sep 27, 2026).
The provider recommends gpt-5.6-cyber.
| Platform | ID | Shutdown | Recommended replacement | Source |
|---|---|---|---|---|
| OpenAI API | gpt-5.4-cyber | Oct 1, 2026 in 4 days | gpt-5.6-cyber | official page |
What breaks
- Requests fail. After Oct 1, 2026 every call that names
gpt-5.4-cyberreturns an error on OpenAI API. Nothing is migrated for you. - Output changes. A newer model answers differently: length, format, refusals and JSON shape can all shift. Run your own prompts through both models before the date and compare.
Find it in your code
Quick look:
grep -rnF "gpt-5.4-cyber" --include=*.{py,js,ts,go,java,rb,yaml,yml,json,env} .Or scan the whole repo for this and every other retiring model, including parameters the replacement rejects:
Want the migration done?
Our $199 migration report runs your saved prompts on gpt-5.4-cyber and on the replacement, shows the outputs side by side,
and gives you a ready patch. See pricing.