← ChatGPT & Codex changelog

ChatGPT — June 12, 2025

v2025-06-12-47f40636 includes 1 new features and 0 fixes. Starting a new project directly from a chat

Added

  • Starting a new project directly from a chat

Improved

  • Improvements to memory to reference past chats in a project*

Changed

  • Expanded Model Support for Custom GPTs
  • Creators can now choose from the full set of ChatGPT models (GPT-4o, o3, o4-mini and more) when building Custom GPTs—making it easier to fine-tune performance for different tasks, industries, and workflows. Creators can also set a recommended model to guide users. Key details:
  • GPTs without Custom Actions can use the model picker to select from all models available to the user.
  • GPTs with Custom Actions currently support GPT-4o and 4.1
  • Available on web for users on Plus, Pro and Team plans.
  • Enterprise and Edu rollout coming soon.
  • Adding More Capabilities to Projects
  • Starting today, we’re adding several updates to projects in ChatGPT to help you do more focused work. These updates are available for Plus, Pro, and Team users.
  • Deep research and voice mode support
  • Sharing chats from projects
  • Upload files and access model selector on mobile
  • Learn more about projects. *Memory improvements are available for Plus and Pro users.
ChatGPT — June 12, 2025 — Release Notes