Nundina › Discover calendars › Version End-of-Life Dates calendar › OpenAI o3 end of lifeOpenAI o3 end of life11 December 2026OpenAI o3 stops receiving security updates. This name is a rolling alias; the date is the one published for o3-2025-04-16. Released 16 Apr 2025. Source: endoflife.date.Version End-of-Life Dates calendarMore from this calendar