Baichuan Intelligence has proudly unveiled Baichuan-M2, an open-source medical-enhanced large model that has attained a remarkable score of 60.1 on HealthBench. This achievement surpasses OpenAI's latest open-source 120B model, gpt-oss, which boasts a size of 32B, thereby establishing Baichuan-M2 as the most potent model in medical capabilities among all open-source offerings. This milestone underscores Baichuan-M2's exceptional performance and unparalleled efficiency within the medical domain.