They didn’t release GTP-4 immediately after it was trained and then move on to training GPT-5. They had 4 for almost 6 months before it was released. 5 was cert

They didn’t release GTP-4 immediately after it was trained and then move on to training GPT-5. They had 4 for almost 6 months before it was released. 5 was certainly well underway long before we’d heard of 4.