Part 4/8:
Interestingly, one hypothesis is that the development timeline of GPT-4.5 indicates it had been in the works longer than expected, as its knowledge cut-off extends to October 2023—which is noteworthy given that models developed afterward, such as Claude 3.7, already have knowledge cut-offs extending into 2024. This disparity indicates a potential lag in OpenAI's development compared to its competitors.