Weibo's VibeThinker-3B AIME 2026 score rests on a post-training pipeline
VibeThinker-3B, a 3-billion-parameter language model from a nine-person team at Sina Weibo, posts benchmark scores that put it alongside models more than 200 times its size. On AIME 2026 the paper reports 94.3, ahead of Gemini 3 Pro's 91.7 and within reach