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WeiboAI
New ModelsOpen weights
VibeThinker-1.5B
WeiboAI releases VibeThinker-1.5B open reasoning model
Weibo's AI team open-sourced VibeThinker-1.5B, a tiny reasoning model that reportedly outperforms much larger models like DeepSeek R1 on select reasoning benchmarks. Part of a week where small open-weights models from Chinese labs kept punching above their weight.