OpenAI just released GPT-4.5 and says it is its biggest and best chat model yet

People with a 200-a-month ChatGPT Pro account can try out GPT-4.5 today. OpenAI says it will begin rolling out to other users next week. With each release of its GPT models, OpenAI has shown that bigger means better. But there has been a lot of talk about how that approach is hitting a wall--including remarks from OpenAI's former chief scientist Ilya Sutskever. The company's claims about GPT-4.5 feel like a thumb in the eye to the naysayers.