GPT-4o and older LLMs restored for paid ChatGPT users as OpenAI plans a GPT-5 personality upgrade

• Paid ChatGPT users are getting access to a bunch of older models
• Altman teases an upgrade to ChatGPT-5’s personality is coming
• The new “warmer” upgrade is to counter the backlash to GPT-5

In his latest tweet on the social media platform X, Sam Altman, CEO of OpenAI, has confirmed that all paid ChatGPT subscribers will be getting access to not only the old GPT-4o model, but also older LLMs like o3, 4.1.

The popular ChatGPT-4.5 will also be coming back, but it will only be available to Pro subscribers. Altman says this is because “it costs a lot of GPUs”, a reference to the amount of compute power that it requires.

In the wake of the backlash against the removal of the popular 4o model with absolutely no warning when GPT-5 was released, Altman seems to have learned a lesson and has ...