Original title: Fight for the right to formulate standards for the next generation of human-computer interaction. Many manufacturers announced that big models will be open for free.

In the past two days, many big model manufacturers at home and abroad have announced that their big model services will be opened for free. This move has attracted widespread attention from the industry.

Baidu announced on February 13 that Wen Xin Yiyan will be fully free from 0:00 on April 1. All PC and APP users can experience its latest model, including ultra-long document processing, professional retrieval enhancement, advanced AI painting, multilingual dialogue and other functions. On the same day, OpenAI also announced that the free version of ChatGPT will use GPT-5 to communicate without restrictions under standard intelligent settings. In addition, Google's latest artificial intelligence model suite has also recently announced that it is officially open to all users.

Engineering at the Institute of Technology and Standards of China Academy of Information and Communications: The rise of open source models such as DeepSeek is the flexible and low-threshold characteristics of reconstructing the industry ecosystem, forcing leading players to break the closed ecosystem. When the open source model can realize 80% or even 90% of the functions of the commercial model, and the cost is only 10%, the moat of the closed source system will naturally collapse, and free opening will become a strategic choice to consolidate user stickiness.

In the past few years, the business operation model of artificial intelligence big models has mainly revolved around paid use. As the big model training technology becomes more and more mature, the hardware efficiency is improved, the cost of model training and inference has been greatly reduced.

Engineer at the Institute of Technology and Standards of China Academy of Information and Communications Technology: The maturity of AI technology is rewriting the business model. As the founders of OpenAI predicted: the cost of using AI dropped 10 times every 12 months, which directly drives companies to convert technology dividends into market-occupation first moves.