Codex Verified
GPT-5.5 leaves Codex ChatGPT sign-in
Data as of · Last verified against vendor · Page updated
On 14 Oct 2026, OpenAI: GPT-5.5 retired from Codex ChatGPT sign-in.
PlanYield, 'GPT-5.5 leaves Codex ChatGPT sign-in', updated 16 Oct 2026, https://planyield.dev/changes/2026-10-14-gpt-55-retired-codex/
What the source says
GPT-5.5 retired from Codex ChatGPT sign-in Status recorded in the seed: verified.
Source: developers.openai.com.
Plans this touches
ChatGPT Free · ChatGPT Go · ChatGPT Plus · ChatGPT Pro · ChatGPT Business
Current limits: Codex usage limits
Other OpenAI changes
29 Sep 2026 ChatGPT Pro adds a $500 tier · 12 Jul 2026 Codex 5-hour limit removed, then restored for Plus · 2 Apr 2026 Codex moves to token credits
Get the Monday diff when the next change lands. All changes