OpenAI announced today that its latest chat model GPT-4.5 has officially entered the research preview stage. This model is hailed as OpenAI's "largest and best" chat AI to date and has begun to be rolled out to ChatGPT Pro users. According to an official statement, GPT-4.5 will be expanded to Plus and Team users next week, followed by Enterprise and Edu users next week. This release marks another major breakthrough for OpenAI in the field of AI technology, and has sparked widespread discussions in the industry and social media.
OpenAI has published a series of posts on the X platform, detailing the performance improvements of GPT-4.5. Officials said early tests showed that interaction with GPT-4.5 was “more natural”, and its extensive knowledge base, stronger user intention understanding and higher “emotional intelligence” (EQ) made it perform well in multiple scenarios. Whether it is optimizing writing, programming tasks, or solving practical problems, GPT-4.5 has shown potential beyond previous generation models.
From a technical point of view, GPT-4.5 has achieved significant improvements in the scale of pre-training and post-training. By extending unsupervised learning, the model is able to better identify patterns, establish associations, and generate creative insights without relying on complex inference processes. This feature makes it more efficient when generating natural language and handling complex tasks.
The release of GPT-4.5 quickly sparked heated discussions on the X platform. "GPT-4.5 is our largest chat model to date and the best version," OpenAI's official post said. This statement has received positive responses from many users. Some users commented: "Can't wait to experience this AI that feels like talking to a thoughtful person." Others have shown a strong interest in specific improvements to GPT-4.5, such as its practical application in programming and problem-solving.
In addition, there were earlier rumors that the GPT-4o model used by ChatGPT Pro users has shown significant intelligence improvements, and it is even speculated that it may be a beta version of GPT-4.5. Now, this speculation seems to be confirmed. X user @super_bonochin wrote in a post a week ago: "ChatGPT's 4o is already much smarter than in the past, and may be a preview of GPT-4.5." This view coincides with OpenAI's release today.
This release is not only a technological upgrade, but also reflects OpenAI's clear planning of its AI model development roadmap. According to previously leaked information and discussions on X, GPT-4.5 is considered a transitional model to GPT-5. The latter is expected to be launched in the coming months and will integrate more advanced features such as the O3 inference model to improve fact-checking capabilities. OpenAI CEO Sam Altman once revealed in a February 12 X post that GPT-5 will provide unlimited chat access to "standard smart settings" for all ChatGPT users, and is completely free, a commitment that further ignites public expectations.
Meanwhile, the launch of GPT-4.5 is also seen as OpenAI's response to its competitors. Recently, the DeepSeek model developed by China has challenged the status of GPT-4o with low cost and high performance, and companies such as xAI and Anthropic are also accelerating their layout in the AI field. The debut of GPT-4.5 is undoubtedly an important step for OpenAI to consolidate its industry leadership.
Despite the exciting advances brought about by GPT-4.5, its actual performance still requires further verification by users and researchers. OpenAI stressed that this is only the preview stage of the study, and the model may still have "illusions" (a situation where AI generates inaccurate or misleading content), although the official claims that the problem has been reduced. Users on social media have already proposed to test their limits, such as performance in complex mathematical reasoning or multilingual processing.
Looking ahead, the release of GPT-4.5 is not only a technological milestone, but also heralds the further expansion of AI application scenarios. From personal assistants to enterprise solutions, the potential of GPT-4.5 is expected. And with the approaching GPT-5, OpenAI seems to be accelerating its vision to create a universal AI system that can be “just-use and get” without complex configurations.
On the X platform, technology enthusiast @dotey shared a clear OpenAI roadmap, pointing out that GPT-4.5 is the "last non-inference model" and that GPT-5 will move towards a unified intelligent system. This view is consistent with industry analysis and adds more expectations to the release of GPT-4.5.
The debut of GPT-4.5 undoubtedly injects a shot in the AI field in 2025. As a key step for OpenAI to GPT-5, it not only demonstrates the rapid advancement of technology, but also reflects the increasingly important role of AI in daily life and work. As more users get started with the experience, the performance of this model will become a hot topic in the coming weeks. As for the global AI competition landscape, every release of OpenAI is reshaping industry standards.