#deprecation
3 total
Release Notes
5 minOpenAI's October 2026 deprecation wave: GPT-4o and GPT-4.1 on 2027-01-14, TTS to gpt-realtime-2.1-mini
The deprecations page is back: four announcements - GPT-4o / GPT-4.1 families (2027-01-14, to gpt-6-luna), gpt-5.1 / gpt-5.3-codex / gpt-5.4-nano (2027-04-01, to gpt-6-sol / gpt-6-luna), TTS four-pack (2027-01-06, gpt-realtime-2.1-mini).
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7 minOpenAI Ecosystem Week 43 Briefing (2026-09-01): mTLS GA, Sora 2 Countdown, Shutdown Calendar
OpenAI week 43 briefing: mTLS and X.509 workload identity federation are GA; Sora 2 and the Videos API enter the 9-24 shutdown countdown; the Prompt Caching dashboard ships; plus the official shutdown calendar through 2027-02.
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7 minOpenAI Deprecation Lifecycle Guide: Notice Periods, Shutdown Calendar, Migration Checklist
How OpenAI retires models and APIs: the official difference between deprecation, shut down, and legacy; notice floors of 6 months (GA) and 3 months (specialized variants); real case timelines; and a five-step migration checklist.
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