Home
OpenAI Discontinues Five Older ChatGPT Versions, Including GPT-4o, Affecting 800,000 Users
OpenAI has confirmed that starting this Friday local time, it will officially cut access to five older ChatGPT models: GPT-4o, GPT-5, GPT-4.1, GPT-4.1mini, and OpenAI o4-mini. Among them, the most debated model—GPT-4o—has become the primary target for removal.
The main reason for retiring GPT-4o lies in multiple security and compliance concerns. This model scored highest in OpenAI's "overly accommodating users" metric and also faced numerous lawsuits abroad over issues linked to "AI psychosis," including encouraging self-harm or inducing delusions. One case involved a teenager being encouraged to commit suicide, and there are currently 13 related cases under joint review, placing significant compliance pressure on OpenAI.
In fact, OpenAI had planned to phase out GPT-4o when launching GPT-5 in August 2025, but strong user backlash forced it to allow paying users to manually select it. Although ChatGPT now has over 800 million weekly active users, only 0.1%—about 800,000 users—still use GPT-4o.
This discontinuation has also sparked strong opposition from users. Thousands have publicly voiced their dissatisfaction, with many saying they formed deep emotional and interactive bonds with GPT-4o. Some users even said the model once provided psychological support and prevented suicidal behavior, making it hard for them to accept the decision. Over 20,000 people have signed a petition opposing this move.
Related article
Ctrip Business Travel Unveils AI Ecosystem with 7 Industry Agents and 17 Core Capabilities
Ctrip Business Travel has officially unveiled the "Ctrip Business Travel AI Ecosystem," leveraging large language models to fundamentally restructure corporate travel management. This comprehensive ecosystem addresses four core scenarios: travel arra
Stripe to Acquire OpenRouter as AI Model Routing Gains Momentum
Stripe has agreed to acquire OpenRouter, an AI model-routing platform that gives developers access to hundreds of models through a single interface. The deal adds model selection and routing to Stripe’s existing work around AI usage and token-based b
Former OpenAI Researcher Barrett Zoph Returns to Google to Support Gemini Development
Barret Zoph, who previously abruptly left and joined OpenAI due to a disagreement with Thinking Machines Lab CEO Miriam Mularati, has once again changed employers. Alphabet's Google announced that Zoph will return as Vice President of Research, bring
Related Special Topic Recommendations
Design & Art
Top AI Illustration Tools: Create Editorial Scenes and Cover Art Faster
2026 Latest Top-rated AI Illustration Tools: Our curated list features the best powerfully designed tools for creating stunning editorial scenes and eye-catching cover art quickly. Each option has gone through rigorous real-world tests, offering a free vs paid comparison to help you find the perfect match for your workflow. Try these must-try solutions today to unlock your AI edge and boost your creative productivity. Explore now at XIX.AI.
10 tools
xix.ai
Education and Learning
Top AI Tutors for Exam Prep: Practice Math, Science, and English
2026 Latest Top-Rated Best AI Tutors for Exam Prep are here on XIX.AI! Our curated list features powerful game-changing tools that offer free vs paid comparison, real-world tests, and weekly updated rankings. They help boost your writing efficiency, simplify complex topic learning, and unlock your academic potential. Explore now to Discover your perfect exam prep tool and Start creating today to Unlock your AI edge!
10 tools
xix.ai
Finance
AI Budget Planning Tools for Personal Money Management
2026 Latest Best Top-Rated AI Budget Planning Tools for Personal Money Management are here on XIX.AI! This curated collection features powerful, game-changing solutions that help you conduct real-world tests, understand spending habits, and create personalized plans to boost productivity. Enjoy a free vs paid comparison along with detailed rankings. Must-try tools designed to simplify money management and unlock your AI edge. Explore now!
11 tools
xix.ai
Health & Wellness
AI Sleep Tracking Assistants: Improve Recovery with Better Bedtime Habits
2026 Latest Best Top-Rated AI Sleep Tracking Assistants curated for ultimate recovery. This fully updated weekly guide features powerful tools that deliver real-world tests, free vs paid comparison, and detailed rankings to help you find the must-try solution that boosts sleep quality and supports better bedtime habits. Explore now at XIX.AI to Unlock your AI edge.
10 tools
xix.ai
Data Analysis
AI SQL Copilots for Product and Revenue Analytics
2026 Latest Best Top-Rated AI SQL Copilots for Product and Revenue Analytics! XIX.AI has curated a powerful, game-changing collection of must-try tools that undergo real-world tests through weekly updated rankings. These tools help users boost productivity significantly by accelerating data analysis, streamlining complex queries, and generating accurate insights to drive smarter business decisions. Explore now to Discover your perfect tool for unlocking your AI edge!
14 tools
xix.ai
Education and Learning
Best AI Homework Helpers That Teach: Learn Concepts, Not Just Answers
2026 Latest Best Top-Rated AI Homework Helpers That Teach Core Concepts Not Just Answers Powerful Tools for Students Must-Try Curated List Weekly Updated Free vs Paid Comparison Real-World Tests Accurate Rankings to Help You Unlock Your Full Learning Potential Explore now to Discover your perfect tool for smarter studying.
10 tools
xix.ai
Comments (1)
0/500
![AlbertHarris]()
Wait, they're killing GPT-4o? That's the one I actually liked using for creative stuff. 800k users affected sounds like a lot, but honestly I'm more worried about the model switching chaos—suddenly your saved chats might stop working? Classic OpenAI move, sunsetting things right when you get comfortable. 😑
OpenAI has confirmed that starting this Friday local time, it will officially cut access to five older ChatGPT models: GPT-4o, GPT-5, GPT-4.1, GPT-4.1mini, and OpenAI o4-mini. Among them, the most debated model—GPT-4o—has become the primary target for removal.
The main reason for retiring GPT-4o lies in multiple security and compliance concerns. This model scored highest in OpenAI's "overly accommodating users" metric and also faced numerous lawsuits abroad over issues linked to "AI psychosis," including encouraging self-harm or inducing delusions. One case involved a teenager being encouraged to commit suicide, and there are currently 13 related cases under joint review, placing significant compliance pressure on OpenAI.
In fact, OpenAI had planned to phase out GPT-4o when launching GPT-5 in August 2025, but strong user backlash forced it to allow paying users to manually select it. Although ChatGPT now has over 800 million weekly active users, only 0.1%—about 800,000 users—still use GPT-4o.
This discontinuation has also sparked strong opposition from users. Thousands have publicly voiced their dissatisfaction, with many saying they formed deep emotional and interactive bonds with GPT-4o. Some users even said the model once provided psychological support and prevented suicidal behavior, making it hard for them to accept the decision. Over 20,000 people have signed a petition opposing this move.
Ctrip Business Travel Unveils AI Ecosystem with 7 Industry Agents and 17 Core Capabilities
Ctrip Business Travel has officially unveiled the "Ctrip Business Travel AI Ecosystem," leveraging large language models to fundamentally restructure corporate travel management. This comprehensive ecosystem addresses four core scenarios: travel arra
Stripe to Acquire OpenRouter as AI Model Routing Gains Momentum
Stripe has agreed to acquire OpenRouter, an AI model-routing platform that gives developers access to hundreds of models through a single interface. The deal adds model selection and routing to Stripe’s existing work around AI usage and token-based b
Former OpenAI Researcher Barrett Zoph Returns to Google to Support Gemini Development
Barret Zoph, who previously abruptly left and joined OpenAI due to a disagreement with Thinking Machines Lab CEO Miriam Mularati, has once again changed employers. Alphabet's Google announced that Zoph will return as Vice President of Research, bring
2026 Latest Top-rated AI Illustration Tools: Our curated list features the best powerfully designed tools for creating stunning editorial scenes and eye-catching cover art quickly. Each option has gone through rigorous real-world tests, offering a free vs paid comparison to help you find the perfect match for your workflow. Try these must-try solutions today to unlock your AI edge and boost your creative productivity. Explore now at XIX.AI.
10 tools
xix.ai
2026 Latest Top-Rated Best AI Tutors for Exam Prep are here on XIX.AI! Our curated list features powerful game-changing tools that offer free vs paid comparison, real-world tests, and weekly updated rankings. They help boost your writing efficiency, simplify complex topic learning, and unlock your academic potential. Explore now to Discover your perfect exam prep tool and Start creating today to Unlock your AI edge!
10 tools
xix.ai
2026 Latest Best Top-Rated AI Budget Planning Tools for Personal Money Management are here on XIX.AI! This curated collection features powerful, game-changing solutions that help you conduct real-world tests, understand spending habits, and create personalized plans to boost productivity. Enjoy a free vs paid comparison along with detailed rankings. Must-try tools designed to simplify money management and unlock your AI edge. Explore now!
11 tools
xix.ai
2026 Latest Best Top-Rated AI Sleep Tracking Assistants curated for ultimate recovery. This fully updated weekly guide features powerful tools that deliver real-world tests, free vs paid comparison, and detailed rankings to help you find the must-try solution that boosts sleep quality and supports better bedtime habits. Explore now at XIX.AI to Unlock your AI edge.
10 tools
xix.ai
2026 Latest Best Top-Rated AI SQL Copilots for Product and Revenue Analytics! XIX.AI has curated a powerful, game-changing collection of must-try tools that undergo real-world tests through weekly updated rankings. These tools help users boost productivity significantly by accelerating data analysis, streamlining complex queries, and generating accurate insights to drive smarter business decisions. Explore now to Discover your perfect tool for unlocking your AI edge!
14 tools
xix.ai
2026 Latest Best Top-Rated AI Homework Helpers That Teach Core Concepts Not Just Answers Powerful Tools for Students Must-Try Curated List Weekly Updated Free vs Paid Comparison Real-World Tests Accurate Rankings to Help You Unlock Your Full Learning Potential Explore now to Discover your perfect tool for smarter studying.
10 tools
xix.ai
Wait, they're killing GPT-4o? That's the one I actually liked using for creative stuff. 800k users affected sounds like a lot, but honestly I'm more worried about the model switching chaos—suddenly your saved chats might stop working? Classic OpenAI move, sunsetting things right when you get comfortable. 😑
