- It is estimated to be 4 to 5 times larger than its predecessor in terms of the number of parameters. - Its effective performance, through synthetic data in its training, is expected to be even more than its increase in parameter size - The model has undergone red teaming (a process where experts attempt to find vulnerabilities or flaws by acting as adversaries) and is currently awaiting release. - GPT-4.5o is positioned as a competitor to Claude Opus 3.5.