1:30 4 hours ago China: Open-source cooperation underpins performance, cost-effectiveness of China's large AI models. StringersHub • 4h Storyline Open-source cooperation underpins performance, cost-effectiveness of China's large AI models Cooperation between China's open-source AI firms is helping the country's AI industry grow faster, experts say. A standout example includes DeepSeek V4's usage of a key optimizer that was tested and proven effective by another Chinese AI firm, Kimi.