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OpenAI has unveiled its latest artificial intelligence model, known as GPT-4.5, which is being hailed as the most extensive and advanced model the company has developed thus far. Unlike its O-series counterparts, GPT-4.5 does not possess reasoning abilities. However, it is recognized for its enhanced conversational skills, heightened emotional sensitivity, and superior problem-solving techniques.
In terms of functionality, this model has access to the most current online information, can handle file and multimedia uploads, and supports a canvas platform for coding tasks. That said, it does not yet offer voice interaction, video understanding, or screen-sharing features.
Currently, GPT-4.5 is in a research preview phase, meaning it is not widely accessible even to subscribers of ChatGPT Plus. Infrastructure limitations appear to be causing delays in the model’s broader rollout.
OpenAI’s CEO, Sam Altman, noted the considerable resources required for GPT-4.5, stating, “It is a giant, expensive model. We genuinely wanted to launch it for Plus and Pro subscribers at the same time, but we’ve encountered a shortage of GPUs. We expect to add tens of thousands of GPUs next week and will begin releasing it to Plus subscribers shortly after.”
Unlike earlier models that progress through logical reasoning to provide answers, GPT-4.5 utilizes unsupervised learning methods, expanding both its training data and computational demands.
The anticipated benefits of this model include minimizing errors (commonly referred to as “hallucinations” in AI terminology), which have historically undermined trust in generative AI chatbots. Additionally, it boasts a wider range of knowledge and a more profound understanding of user queries.
Benchmark tests demonstrate that GPT-4.5 achieves significantly higher accuracy compared to its predecessors, including GPT-4o, o3-mini, and o1 models. Its error rate is also less than half of that of the o3-mini model, marking considerable progress in AI reliability.
OpenAI emphasizes that, for GPT-4.5, they have implemented scalable techniques enabling the training of larger, more powerful models based on previous, smaller ones. The model excels at engaging with creative tasks, professional inquiries, and complex conversations in a manner that feels more organic than ever before.
Overall, OpenAI claims that GPT-4.5 surpasses its earlier models in creativity, aesthetic judgment, writing ability, and design-oriented tasks. Access to GPT-4.5 is gradually being made available to ChatGPT Pro users across web, mobile, and desktop platforms, with ChatGPT Plus and Team tiers expected to gain access in the coming week, followed by Enterprise and Education users afterward.
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