Xiaomi open-sources Xiaomi-Robotics-U0, a 38B unified world model that generates multi-view robot scenes and training data
On 2026-07-13 Xiaomi released Xiaomi-Robotics-U0 (arXiv 2607.11643, Apache-2.0), a 38B autoregressive model initialized from Emu3.5 that handles text-to-image, image editing, multi-view embodied scene generation, embodied transfer and embodied video in one next-token framework; its synthetic data raised π0.5's out-of-distribution real-world success from 36.9% to 63.2%. A smaller U0-4B followed on 2026-09-08.
Key facts
- 38B params per paper (HF README says 34B); initialized from Emu3.5; shared discrete visual tokenizer
- Authors: beats GPT-Image-2.0 in human evals of embodied scene generation and transfer; #1 on World Arena for embodied video generation
- Used as a data engine: π0.5 OOD success 36.9% -> 63.2% on hard real-world manipulation tasks
- FlashAR decoding: 5.44 s per 1024x1024 image on one H20 (82.86x faster than eager AR)
- U0-4B, U0-Sequence, U0-4B-Sequence weights and FSDP training code released 2026-09-08
What happened
Three days before its Xiaomi-Robotics-1 VLA, Xiaomi released an open world model that treats robot-scene generation as an extension of general image and video generation. The goal is to keep the general visual knowledge of a large pretrained generator while adding multi-view consistency and robot embodiment constraints.
Why it matters
Like NVIDIA's Cosmos, it bets that generated data can offset the shortage of real robot data. Xiaomi reports a large gain in π0.5's generalization from U0 data, which is a concrete measure of whether synthetic data helps real robots. The figures are the authors' own.
Changelog
- 2026-09-29: created
Models
- Xiaomi-Robotics-U0 (38B) / U0-4B Xiaomi · current
Related events
- Xiaomi open-sources Xiaomi-Robotics-1, a VLA trained on 100K+ hours of real trajectories ★★★
- NVIDIA releases Cosmos 3, an open omni-model for physical AI (world generation, reasoning and actions) ★★★
Sources (4)
- paperarXiv 2607.11643: Xiaomi-Robotics-U0
- codeHugging Face: Xiaomi-Robotics-U0
- codeHugging Face: Xiaomi-Robotics-U0-4B
- officialProject page
id: 2026-07-13-xiaomi-robotics-u0 · updated 2026-09-29 · open in the interactive timeline