Goodbye GPT-4o — OpenAI Retires a Fan Favourite
On February 13, 2026, OpenAI officially retired GPT-4o, GPT-4.1, GPT-4.1 mini, and o4-mini from ChatGPT. The move marks the end of an era for a model that was more than just software to many of its users.
The End of an Era
On February 13, 2026, OpenAI officially retired GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini from ChatGPT — alongside the previously announced retirement of GPT-5 Instant and GPT-5 Thinking. It's a significant sweep, but GPT-4o is the one that stings. Launched in May 2024, it was the model that made millions of users feel like they were talking to something that genuinely understood them.
A Model With a Complicated History
GPT-4o's farewell wasn't clean. When OpenAI replaced it with GPT-5 as the default in August 2025, the backlash was immediate — users launched the #Keep4o hashtag and flooded social media with complaints about losing the model's warmth and conversational personality. OpenAI reversed course and restored GPT-4o for paid users, with CEO Sam Altman pledging publicly to give "plenty of notice" before any future retirement.
This time, OpenAI kept that promise — announcing the retirement weeks in advance and being explicit about the reasoning.
Why Now?
The numbers tell the story clearly. Only 0.1% of users were still choosing GPT-4o each day, with the vast majority having shifted to GPT-5.2. But OpenAI didn't just cite usage statistics — it acknowledged that the feedback from GPT-4o loyalists directly shaped what came after:
"We brought GPT-4o back after hearing clear feedback from a subset of Plus and Pro users, who told us they needed more time to transition key use cases, like creative ideation, and that they preferred GPT-4o's conversational style and warmth. That feedback directly shaped GPT-5.1 and GPT-5.2."
In other words, GPT-4o didn't just end — it left a blueprint. The personality traits that made it beloved are now baked into its successors.
What's Being Retired and When
- February 13, 2026: GPT-4o, GPT-4.1, GPT-4.1 mini, and o4-mini removed from ChatGPT for most users
- February 19, 2026: GPT-5 Pro and GPT-5 (Instant and Thinking) retired; Enterprise workspaces retain access until this date
- April 3, 2026: GPT-4o fully retired from all plans, including Custom GPTs for Business, Enterprise, and Edu customers
- API: No changes at this time — GPT-4o remains accessible via the API
What's Next: GPT-5.2 and Beyond
OpenAI has been direct about what replaces GPT-4o: GPT-5.2, which already handles the vast majority of usage. The company has also signalled continued work on personality, creativity, and reducing what it calls "unnecessary refusals and overly cautious or preachy responses" — all areas where GPT-4o had a strong reputation.
A version of ChatGPT specifically designed for adults over 18 is also in development, reflecting a broader push toward treating users with more autonomy and fewer guardrails. Age prediction has already been rolled out in most markets to help calibrate the experience by user group.
The Emotional Dimension
What makes GPT-4o's retirement unusual isn't the technical transition — it's the emotional response it triggered. Users shared stories online about the model being a reliable companion during difficult personal moments. That kind of attachment to a software product is rare, and it says something meaningful about how GPT-4o was designed: not just to be useful, but to feel present.
Whether GPT-5.2 and its successors can replicate that quality at scale — while also being more capable, more accurate, and more responsible — is the open question that OpenAI is now working to answer.