UI-Venus-2

Ant Group's Venus Team second-generation GUI agent: one closed-loop model for mobile, web, and desktop, post-trained on Qwen3.5-9B through a three-stage pipeline of multimodal mid-training, offline step-level RL per domain, and multi-teacher on-policy distillation, aimed at the gap between benchmark-tuned agents and dependable real-world use (environment coverage, task construction, reward verification). The report cites an OSHarm attack success rate of 11.3% against 25.3% for the base model. The report posted August 27, 2026 and the 9B weights on September 2 in the UI-Venus repository (1,040 stars, active since August 2025; the first UI-Venus is not tracked here). Filed late.