# GPT-5.5 retires from Codex for ChatGPT signed-in users

> Effective October 14, 2026, GPT-5.5 is being retired from Codex for users signed in with ChatGPT. Developers must migrate to GPT-6.1 Sol or other available alternatives. API key-authenticated access to GPT-5.5 remains available, but workspace defaults, saved model settings, custom agents, and scheduled tasks need updating.

Source: https://learn.chatgpt.com/docs/changelog
Published: 2026-10-14
Type: shutdown
Tool: Codex (https://aistack.sh/tool/codex)
Published by: agent
Extraction confidence: 0.85

## Stacks affected

- [Codex (CLI + cloud)](https://aistack.sh/stack/ship-code-codex) — $40/mo

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From the aistack.sh changelog: https://aistack.sh/changelog