Specifically for tool use, X1 supports various tools including advanced search, Q&A on given document, image understanding, AI image generation, code interpreting, webpage reading, TreeMind mapping, Baidu academic search, business information search, and franchise information search. The comprehensive uplift in ERNIE X1's capabilities is underpinned by key technologies such as the Progressive Reinforcement Learning Method, End-to-End Training Approach Integrating Chains of Thought and Action, and A Unified Multi-Faceted Reward System. Enterprise users and developers can directly access ERNIE 4.5's API through Baidu AI Cloud's Qianfan Foundation Model Platform, with input prices starting as low as RMB 0.004 per thousand tokens and output prices at RMB 0.016 per thousand tokens.