[Step 5 Preview, a new flagship base model, is released and ranks among the top three open source models in the world's authoritative list] Step Star releases a new generation of flagship base model, Step 5 Preview, focusing on AI programming, software engineering, professional knowledge work, finance and other scenarios to improve the overall performance of the model in real-world Agentic tasks, achieve a good balance between capabilities, cost, efficiency and scene coverage, and further expand the optimal boundary between intelligence and cost. In the global authoritative list Artificial Analysis Intelligence Index (AA Comprehensive Intelligence Index), Step 5 Preview ranks among the top three open source projects in the world. It is worth noting that the single-task cost of this model is only 1/8 of that of Claude Opus 5. It is understood that Step 5 Preview will be officially open sourced on October 15th. (Kechuangban Daily reporter Huang Xinyi)