{"type": "article", "title": "StepFun Launches Step 5 Preview: A 600B-Total, 27B-Active MoE Model With 1M Context for Long-Horizon Agentic Work", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/stepfun-launches-step-5-preview-a-600b-total-27b-active-moe-model-with-1m-for", "original_source": "https://www.marktechpost.com/2026/09/20/stepfun-launches-step-5-preview/", "published": "2026-09-21T06:37:18+00:00", "accessed": "2026-09-21", "id": "stepfun-launches-step-5-preview-a-600b-total-27b-active-moe-model-with-1m-for"}