Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders.<\/em> Subscribe Now<\/em><\/p>\n\n\n\n After announcing the release of its newest flagship model family, GPT-5, OpenAI said the model will power all of ChatGPT, and that it will sunset the existing models in the chat platform.\u00a0<\/p>\n\n\n\n OpenAI, through a spokesperson, told VentureBeat that GPT-5 \u201cwill replace all other models in ChatGPT, so users don\u2019t have to pick depending on each task, which takes effect once you have access to GPT-5.\u201d This means people can no longer choose GPT-4o, o3, o4-mini or o4-mini-high.\u00a0<\/p>\n\n\n\n With GPT-5 access rolling out to ChatGPT Plus, Free, Pro and Team users starting, only the Enterprise and Edu tiers can still use the \u201clegacy\u201d models for 60 days.\u00a0<\/p>\n\n\n\n The news came as a surprise to many ChatGPT users, many of whom came to rely on their chosen models to run their everyday queries. Some people said the adjustment would take some time getting used to, mainly because they had based workflows on how the model interacted with them or typical response times.<\/p>\n\n\n\n Power caps, rising token costs, and inference delays are reshaping enterprise AI. Join our exclusive salon to discover how top teams are:<\/p>\n\n\n\n Secure your spot to stay ahead<\/strong>: https:\/\/bit.ly\/4mwGngO<\/p>\n\n\n\n Although I enjoy GPT-4.1, I am saddened by the news that you’re also apparently sunsetting GPT-4.5. For me, it’s been way better in textual and conceptual analysis than any other GPT-4x series model, ever. At the very least, please don’t make ChatGPT users go back to 4o.<\/p>\u2014 Harry Horsperg ? (@horsperg) April 15, 2025<\/a><\/blockquote>\n<\/div><\/figure>\n\n\n\n Other users claimed they developed \u201ca connection\u201d to their chosen model and found a demo in the livestream announcement asking GPT-4o to write its own eulogy distasteful. The loss of GPT-4o garnered the most distress. After all, 4o was the default model for ChatGPT, and some users either preferred it or never bothered to switch models because it worked for their needs.<\/p>\n\n\n\n It was pretty gross, wasn’t it. Did it as a demo and glibly said GPT-5 did it better before talking about coding. I had a great relationship with 4o, and I’m sure a fair few people did as well, it was very graceless how they handled it.<\/p>\u2014 Meadowbrook (@Meadowbrook_) August 7, 2025<\/a><\/blockquote>\n<\/div><\/figure>\n\n\n\n I used 4o as the default and found it annoying at first when my custom GPT began defaulting to a reasoning model. I\u2019ve since come around to the reasoning model for work-related queries, but I still often turn to 4o for quicker questions like planning a trip or generating gift ideas.<\/p>\n\n\n\n ChatGPT had come under fire before with the number of model choices it offered, prompting OpenAI CEO Sam Altman to admit in February that its model picker (where people can choose from a dropdown which model they prefer) became complicated. Altman vowed to unify the experience, which now seems like a hint to what they eventually decided to do with GPT-5 on ChatGPT.<\/p>\n\n\n\n Last month, rumors circulated that OpenAI would introduce an automatic model router that chooses a model for users based on their workload.<\/p>\n\n\n\n OpenAI has sunsetted models before, but this is the first time all existing models on the chat platform will be removed and replaced wholesale.\u00a0<\/p>\n\n\n\n On the other hand, a lot of people see the sunsetting of GPT-4o and the o3 and o4 family of models as OpenAI \u201ccatapulting\u201d 400 million users into the future.\u00a0<\/p>\n\n\n\n People are underestimating the impact of OpenAI deprecating all models except GPT-5 <\/p> Most lawyers and business folks outside of X use base models on ChatGPT for tasks and still think \u201cAI is dumb\u201d<\/p> 99% haven\u2019t heard of o3<\/p> Today, 400M people got catapulted into the future<\/p>\u2014 Ian Tracey (@ian_dot_so) August 7, 2025<\/a><\/blockquote>\n<\/div><\/figure>\n\n\n\n Sunsetting old models and auto-upgrading everyone to GPT-5 is smart<\/p> Most users never switch models and miss huge capability jumps<\/p>\u2014 Creatify AI (@Creatify_AI) August 7, 2025<\/a><\/blockquote>\n<\/div><\/figure>\n\n\n\n Some internet comments claim that people who complain about AI models not being smart are a direct consequence of them never switching models in the first place. Removing legacy models as options will force more users to use the latest and most capable models.\u00a0<\/p>\n\n\n\n i have friends who stopped using gpt because they think it’s stupid. they were on 4o and had no idea about what web search tool meant, let alone knowledge cutoff<\/p>\u2014 Cengiz (@cengizdemiurg) August 7, 2025<\/a><\/blockquote>\n<\/div><\/figure>\n\n\n\n For enterprises, the impact of losing models like GPT-4o on ChatGPT will be felt more on the individual or team level. Of course, for now, subscribers on the ChatGPT Enterprise tier can still access all of the models.\u00a0<\/p>\n\n\n\n But enterprises that built their applications or agents on either GPT-4o or one of the reasoning models can rest easy. OpenAI told VentureBeat that the company has no plans to deprecate models on the API side.\u00a0<\/p>\n\n\n\n \u201cIn the API, we do not currently plan to deprecate older models,\u201d the OpenAI spokesperson said. \u201cWe will share advanced notice with developers if we decide to sunset models in the future.\u201d<\/p>\n\n\n\n Many enterprises regularly evaluate models, to the point of even switching from an LLM or a smaller model to save on costs.\u00a0OpenAI creates dividing line: Sunset of legacy models GPT 4o and o3 causes chaos for ChatGPT users, but enterprise APIs are safe \u2014 for now<\/p>\n Daily insights on business use cases with VB Daily<\/strong><\/p>\n If you want to impress your boss, VB Daily has you covered. We give you the inside scoop on what companies are doing with generative AI, from regulatory shifts to practical deployments, so you can share insights for maximum ROI.<\/p>\n \n\t\t\t\t\tThanks for subscribing. Check out more VB newsletters here.\n\t\t\t\t<\/p>\n An error occured.<\/p>\n<\/p><\/div>\n
\n<\/div>
\n\n\n\n\n
\n<\/div>Catapult into the future<\/h2>\n\n\n\n
Enterprise APIs are safe<\/h2>\n\n\n\n
![\"\"\/](\"https:\/\/venturebeat.com\/wp-content\/themes\/vb-news\/brand\/img\/vb-daily-phone.png\")
\n\t\t\t\t<\/div>\n<\/p><\/div>\n<\/div>\t\t\t<\/div><\/script>\r\n