Step 5 Preview Returns to the Global Top Tier Author | Wu Haiming Editor | Li Na TAG62@@Cen Feng Two years ago, when StepFun first made its public debut in the foundation-model community, it took the stage by storm with Step 1. Later that same year, it released Step 1V and the trillion-parameter foundation model Step 2 in succession. At the time, the industry still believed that the bigger the model, the more capable it was. Whoever pushed the Scaling Law