来源：环球网

【环球网科技综合报道】2月28日消息，据路透社报道，人工智能公司OpenAI宣布推出其最新的大型语言模型——GPT-4.5研究预览版。该模型被OpenAI称为其“规模最大、知识储备最丰富”的聊天模型，具备更强的模式识别能力、更高的情商以及更低的幻觉率。

不过，尽管GPT-4.5性能卓越，但其庞大的模型规模和高昂的计算成本也带来了挑战。OpenAI首席执行官Sam Altman表示，由于GPU资源紧张，推广节奏受到一定影响。他透露，下周OpenAI将增加数万块GPU，以支持更广泛的用户访问。

此外，GPT-4.5的API定价较高，输入token的价格是GPT-4o的30倍，输出token的价格则是15倍。OpenAI正在评估是否长期在API中提供该服务。（鱼七）

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