WeChat has begun testing Xiaowei, an AI assistant integrated directly into its app. This assistant is powered by WeLM, WeChat's proprietary large language model, which has been developed with a sparse Mixture-of-Experts (MoE) architecture. A 617-billion-parameter version of WeLM activates only 23 billion parameters per token, and the development team is investigating "Hidden Decoding" as a method for further scaling. AI
IMPACT This integration signifies a trend of large consumer apps embedding advanced AI assistants directly into their platforms.
RANK_REASON This is a product integration of an existing model, not a frontier release from a major AI lab.
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