Tencent released preview weights for its Hy4 large language model on August 28—a 770 billion parameter mixture-of-experts model with 49 billion active parameters and 1 million token context window. Early field testing showed the model fixed 17 bugs for approximately $3.13 in compute costs, demonstrating strong coding capabilities. The release is part of a broader trend of major tech companies making frontier AI models available for research and development.
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