Chinese technology giant Tencent Holdings began tests to integrate homegrown startup DeepSeek’s artificial-intelligence model into its Weixin messaging app, sending shares in the social-media and videogame company to their highest level since 2021.

Tencent recently started testing access to DeepSeek’s AI model for searches in Weixin, in addition to its own Hunyuan model, allowing some users to click on AI Search on the search bar within the app, a Tencent spokesperson said Monday.