← ChatGPT & Codex changelog

ChatGPT — January 17, 2025

This release introduces a redesigned Custom Instructions interface, making personalization of ChatGPT responses more intuitive. Users now have clearer options for defining desired AI traits, preferred communication styles, and specific interaction rules. Existing custom instruction settings will remain unchanged. This updated experience is rolling out across web and Windows desktop, with availability on mobile and macOS devices, and in select European regions, in the coming weeks.

Added

  • We've updated custom instructions to make it easier to customize how ChatGPT responds to you. With the new UI, you can tell ChatGPT the traits you want it to have, how you want it to talk to you, and any rules you want it to follow. If you're already using custom instructions, this won't change your current settings. The new UI is rolling out now on http://chatgpt.com and desktop on Windows, and is coming to mobile and desktop on macOS in the next few weeks. Available soon to ChatGPT users in the EU, Norway, Iceland, Liechtenstein, and Switzerland.

Changed

  • More personalization in Custom Instructions
ChatGPT — January 17, 2025 — Release Notes