AIGPT-5.5 leaves ChatGPT and Codex plans on October 14, 2026, but API access stays
OpenAIDevs says GPT-5.5 will remain available via the OpenAI API Platform and in Codex sessions authenticated with an API key.
TLDR
The ChatGPT account announced that GPT-5.5 will be retired from ChatGPT, ChatGPT Work and Codex across all plans on October 14, 2026. It directs Codex users to switch to GPT-5.6 Sol or GPT-6 Astra. OpenAIDevs clarified that GPT-5.5 will remain available via the OpenAI API Platform and in Codex sessions authenticated with an API key.
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GPT-5.5 leaves ChatGPT and Codex plans on October 14, 2026, but API access stays
OpenAIDevs says GPT-5.5 will remain available via the OpenAI API Platform and in Codex sessions authenticated with an API key.