According to BlockBeats, Microsoft is gearing up for the release of OpenAI's latest models. GPT-4.5 is anticipated to be launched as early as next week, while GPT-5 is expected to be available by late May. The updated GPT-5 model will bring significant improvements to the usage of ChatGPT, aiming to unify OpenAI's 'o' series and GPT series models, thereby reducing confusion for users when selecting models.