GPT-5.2 and GPT-5.3-Codex have been sunset in Codex with ChatGPT subscriptions

I wanted to share some feedback as a long-time user and paying Pro subscriber. The primary reason I subscribed was GPT-5.3-Codex. For my workflow, it was the most effective coding model I’ve used, including compared to competing tools. It was fast, focused, predictable, and exceptionally good at understanding existing codebases without excessive token usage. With the removal of GPT-5.3-Codex, the main value proposition that brought me to the platform is unfortunately gone. While GPT-5.5 is undoubtedly powerful, it feels much more general-purpose and significantly more token-intensive for the kind of software engineering work I do day-to-day. Unless GPT-5.3-Codex returns or a comparable coding-focused replacement is made available, I will discontinue my Pro subscription and rely on Claude Code for my development workflow going forward. I share this respectfully and as genuine product feedback. GPT-5.3-Codex was an excellent model (much better than Claude Code in my humble opinion), and I believe many developers subscribed specifically because of the experience it provided. Thank you to the team for all the work that went into it.