I used this model today for helping me write fanfictions and make personal decisions. Also I tried to use it for PR reviewing job. Here is what I found:
(1) The novel it wrote is much more attractive than GPT-4o. GPT-4o could write attractive novels but could easily fall into some familiar and cliche while GPT-4.5 really provides me some incredible ideas.
(2) In terms of decision making, the reduction of hallucination and more detailed and convincing discussions makes the decision-making process clearer than GPT-4o. In fact, 4o could make decision for me but usually involves 50-60 questions, but GPT-4.5 is able to give an extremely convincing result in about 5-7 dialogs.
(3) For pull request review, it involves 14,000 tokens (with 3,000 system tokens and 11,000 user tokens), it is the best among all existing models, but not improving a lot from o3-mini-high.
(4) To be fair, the most irreplacable part of GPT-4.5 is creative idea, but it is too expensive currently that I can buy three real novels before getting an incredibly cool idea from GPT-4.5.