# GPT-5.5 Retired in ChatGPT and Codex: What Replaces It

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## Article Metadata
- Title: GPT-5.5 Retired in ChatGPT and Codex: What Replaces It
- Summary: OpenAI retires GPT-5.5 from ChatGPT and Codex on 14 October 2026. Paid plans move to GPT-6 Sol, Free and Go to GPT-6 Luna, and the API keeps GPT-5.5.
- Published: Oct 13, 2026, 9:35 AM EDT
- Updated: Oct 13, 2026, 9:35 AM EDT
- Category: Research
- Primary topic: OpenAI Codex
- Authors: Maya Rao
- Read time: 3 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

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