ChatGPT — September 15, 2025

Changed

• Personalization settings are now in Settings
• Personalization no longer opens in a separate modal. You can manage personalization, choose a ChatGPT personality, add custom instructions, and update Memory directly in Settings → Personalization.
• Updates to Codex (Plus/Pro) - Introducing GPT-5-Codex
• We’re adding GPT-5-codex, a GPT-5 variant optimized for agentic coding in Codex. It’s available everywhere you use Codex: default for cloud tasks and code review, and selectable for local workflows via the Codex CLI and IDE extension. Use GPT-5-codex for coding-focused work in Codex, or Codex-like environments; use GPT-5 for general, non-coding tasks. Please review the announcement blog for more information. Note: GPT-5-Codex is not currently supported in ChatGPT or the API. To learn more about Codex, visit the developers site as well as our general help article: Using Codex with your ChatGPT plan.