Since the introduction of GPT-5, some users who did not like it said that the response given by GPT-4o was better. In parallel, now the CEO of OpenAI said that it will return the legacy GPT-4o model to paid ChatGPT Plus users.
However, it will be offered for a limited time. OpenAI will monitor its usage rate, and determine how long it will offer the legacy model before it is completely discontinued.
In addition, it is also said that GPT-5 experienced problems in the early introduction due to technical problems, making it seem less intelligent. The matter is said to have been fixed, and GPT-5 should operate better now.
For those of you who use ChatGPT, the GPT-5 model has now been widely introduced, and you can use it. GPT-5 performance is also seen to be faster than before, and is said to have better mathematical and programming capabilities.