ChatGPT's official announcement has revealed that the GPT-5.5 model will be completely taken offline on October 14, 2026. This decision will impact all subscription services, including ChatGPT, ChatGPT Work, and Codex, with no grace period provided. OpenAI urges users, particularly those of Codex, to transition to either the GPT-5.6 Sol or GPT-6 Astra models at the earliest opportunity to ensure a seamless continuation of service. Since its launch on April 24, 2026, GPT-5.5 has been widely recognized for its efficiency and low token consumption. This strategic move is intended to foster technological advancement and offer users more streamlined and effective AI assistance.
