{"type": "article", "title": "Branching Policy Optimization: Sandbox-Native Language Agent Reinforcement Learning", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/branching-policy-optimization-sandbox-native-language-agent-reinforcement", "original_source": "https://arxiv.org/abs/2607.14171", "published": "2026-07-17T04:00:00+00:00", "accessed": "2026-07-17", "id": "branching-policy-optimization-sandbox-native-language-agent-reinforcement"}