GPT-5.5 Retired After Under Six Months, Users Mourn

OpenAI retired GPT-5.5 from ChatGPT and Codex on October 14 after less than six months, keeping only API-authenticated Codex sessions; Reddit users mourned it as the best model for cybersecurity work, with some rushing to preserve its 'personality.'

2026-10-14 ~ 2026-10-15 · 3 related posts

• GPT-5.5 users write "reincarnation prompts" to save its personality before retirement — APPSO · 2026-10-14
• OpenAI to retire GPT-5.5 from ChatGPT and Codex on Oct 14; API unaffected — koltregaskes · 2026-10-14
• GPT-5.5 discontinued: users mourn the loss of their favorite model for cyber work — Top-Support5831 · 2026-10-15