# Qiyuan releases PrimeSim world-model simulator, tops EWMBench and WorldSimProbe

- Source: 机器之心 · 微信公众号
- Published: 2026-10-30T10:33:40.000Z
- RoboHot: https://robohot.news/en/items/h61d7gqrfgapmen8quwi2huq0
- Original: https://mp.weixin.qq.com/s?__biz=MzA3MzI4MjgzMw==&mid=2651071154&idx=1&sn=fc8decaaf9bc54e43d1721d8c2c16a77&chksm=85600df7d335cd2bf66d0991abacce002a55c04a7fd313e4169a226e238922442501464b6c38&scene=126&sessionid=1793371799#rd

## Summary

The Qiyuan Embodied Research Center has released PrimeSim, a world-model simulator for robot manipulation tasks, built by adapting a pretrained video generation model through mid-training and post-training stages. It ranks first on EWMBench with an overall score of 6.09, and took first place in three of five WorldSimProbe evaluations: global trajectory coverage, action-source behavior preservation, and interaction dynamics.

## Why it matters

The original text provides the two-stage training recipe and results across multiple leaderboards, which readers can use to judge the feasibility of adapting video generation models into simulators.