#open weight scientific AI

Shanghai AI Lab's 397B Open Model Tops MMLU-Pro — and Beats GPT-5.5 on Code

Shanghai AI Lab's InternS2-Preview-397B is a 397B open-weight MoE model that tops MMLU-Pro at 89.75 — beating GPT-5.5 — and leads open-source general reasoning, with specialized training across 20+ scientific domains.