April 2027 has not started. 1 change is scheduled; the service below still works until its date.
1
Scheduled
Scheduled
OpenAI (effective 2027-04-01)
The OpenAI API keeps running. The gpt-5.3-codex, gpt-5.1 and gpt-5.4-nano models can be called until April 1, 2027. OpenAI's replacements: gpt-6-sol for gpt-5.3-codex and gpt-5.1; gpt-6-luna for gpt-5.4-nano. Source ↗