Baidu (09888) TextMind 5.1 officially launched: Pre-training costs only about 6% of models of the same size in the industry, and search capabilities ranked first in the domestic LMArena.

Baidu's new generation of large basic model Wenxin 5.1 officially launched today. Public information shows that Wenxin 5.1 uses the "multi-dimensional elastic pre-training" technology, which greatly reduces the training cost of the model while fully inheriting the knowledge reserve of Wenxin 5.0: the total parameters are compressed to about 1/3 of the original, the activation parameters are compressed to about 1/2, and only about 6% of the pre-training cost of models of the same scale in the industry is used, achieving a leading basic effect at the same level. In terms of performance, Wenxin 5.1 has improved in core abilities such as intelligent agents, knowledge understanding, logical reasoning, and deep search. According to reports, in the latest ranking of the LMArena large model arena, Wenxin 5.1 ranks first in the domestic search list and fourth globally with a score of 1223, and is also one of the domestic large models on the list. Search capabilities mainly manifest in the retrieval, integration, and generation of multi-source information, which can be used in content creation, intelligent assistants, enterprise knowledge management, and intelligent agent applications. The technical focus of Wenxin 5.1 this time is to maintain the basic abilities of the model while compressing the training cost. The so-called "multi-dimensional elastic pre-training" is a technical direction proposed by Baidu when Wenxin 5.0 was released, with the core idea of generating multiple scale models through one training to improve training efficiency and reduce resource consumption. Wenxin 5.1 is seen as a phased achievement of this technical route. Currently, Wenxin 5.1 has been simultaneously launched on Baidu's Qianfan Model Plaza and Wenxin Yiyanyan official website, open for experience for enterprise users and developers. Next, Baidu will announce AI technology breakthroughs and industrial landing progress related to large models at the Create 2026 Baidu AI Developers Conference on May 13th to 14th.