OpenAI today announced that its latest chat model, GPT-4.5, has officially entered the research preview phase. This model is touted as OpenAI's "largest and best" chat AI to date and is being gradually rolled out to ChatGPT Pro users. According to the official announcement, GPT-4.5 will expand to Plus and Team users next week, followed by Enterprise and Edu users the week after. This release marks another significant breakthrough in OpenAI's AI technology, sparking widespread discussion in the industry and on social media.
Core Highlights of GPT-4.5
OpenAI published a series of posts on X, detailing the performance improvements of GPT-4.5. The company stated that early tests show interactions with GPT-4.5 are "more natural," and its extensive knowledge base, enhanced understanding of user intent, and higher "emotional intelligence" (EQ) make it excel in various scenarios. Whether optimizing writing, programming tasks, or solving real-world problems, GPT-4.5 demonstrates potential surpassing its predecessors.
From a technical perspective, GPT-4.5 has achieved significant improvements in both pre-training and post-training scale. By expanding unsupervised learning, the model can better identify patterns, establish connections, and generate creative insights without relying on complex reasoning processes. This feature makes it more efficient in generating natural language and handling complex tasks.
Social Media Buzz and User Expectations
The release of GPT-4.5 quickly sparked lively discussions on X. OpenAI's official post stated: "GPT-4.5 is our largest chat model yet, and the best version." This statement received positive responses from many users. One user commented: "Can't wait to experience this AI that 'feels like talking to a thoughtful person.'" Others expressed strong interest in the specific improvements of GPT-4.5, such as its practical applications in programming and problem-solving.
Furthermore, earlier rumors suggested that the GPT-4o model used by ChatGPT Pro users had shown significant intelligence improvements, even speculated to be a test version of GPT-4.5. Now, this speculation seems confirmed. X user @super_bonochin wrote in a post a week ago: "ChatGPT's 4o is already far smarter than before, possibly a preview of GPT-4.5." This view aligns with OpenAI's announcement today.
Strategic Significance of GPT-4.5
This release is not only a technical upgrade but also reflects OpenAI's clear planning for its AI model roadmap. According to previously leaked information and discussions on X, GPT-4.5 is considered a transitional model leading to GPT-5. The latter is expected to launch in the coming months and will integrate more advanced features, such as o3 reasoning models, to improve fact-checking capabilities. OpenAI CEO Sam Altman revealed in an X post on February 12 that GPT-5 will provide all ChatGPT users with unlimited chat access at a "standard intelligence setting," completely free, a promise that further ignited public anticipation.
Meanwhile, the launch of GPT-4.5 is also seen as OpenAI's response to competitors. Recently, the Chinese-developed DeepSeek model challenged the position of GPT-4o with its low cost and high performance, while companies like xAI and Anthropic are also accelerating their layouts in the AI field. The appearance of GPT-4.5 is undoubtedly an important step for OpenAI to consolidate its industry leadership.
Prospects and Challenges
Although GPT-4.5 brings exciting advancements, its actual performance still requires further verification by users and researchers. OpenAI emphasizes that this is only a research preview phase, and the model may still exhibit "hallucinations" (AI generating inaccurate or misleading content), although the company claims this issue has been reduced. Social media users have already expressed a desire to test its limits, such as its performance in complex mathematical reasoning or multilingual processing.
Looking ahead, the release of GPT-4.5 is not only a technological milestone but also foreshadows the further expansion of AI application scenarios. From personal assistants to enterprise solutions, the potential of GPT-4.5 is exciting. With GPT-5 approaching, OpenAI seems to be accelerating its vision: creating a general-purpose AI system that is "ready to use" without complex configuration.
On X, tech enthusiast @dotey shared a clear OpenAI roadmap, indicating that GPT-4.5 is the "last non-reasoning model," while GPT-5 will move towards a unified intelligent system. This view is consistent with industry analysis, adding more anticipation to the release of GPT-4.5.
The appearance of GPT-4.5 has undoubtedly injected a shot of adrenaline into the AI field in 2025. As a crucial step for OpenAI towards GPT-5, it not only showcases the rapid progress of technology but also reflects the increasingly important role of AI in daily life and work. As more users get hands-on experience, the performance of this model will be a hot topic in the coming weeks. For the global AI competitive landscape, every release from OpenAI reshapes industry standards.