Notion AI has further expanded its model library with the addition of GPT-5.4.

This update is designed for “long-horizon” tasks that require complex planning and execution across your databases and pages. GPT-5.4 excels at processing vast amounts of context to deliver more accurate, less verbose outputs, making it particularly effective for automated morning briefings or summarising intricate project threads.

To start using the new model, open any Notion AI chat or the model selector within an Agent’s settings and select GPT-5.4 from the dropdown menu.