GPT-5.6 Sol just got better in one place and stayed the same everywhere else

OpenAI improved GPT-5.6 Sol's performance on longer tasks, specifically in ChatGPT, while keeping it unchanged elsewhere. This change may affect teams using ChatGPT before moving tasks to Codex or Work. The update is relevant to teams using OpenAI's AI services. No action is required, but awareness of the change is necessary. Users should test and adjust their workflows accordingly.