TMTPOST -- ByteDance’s Security and Risk Control Department has issued an internal memo stating that, starting June 30, the company will begin phasing out the use of third-party AI development tools—including popular AI coding assistants Cursor and Windsurf—citing concerns over potential data leakage. To replace these tools, ByteDance will mandate the use of its proprietary AI programming assistant, Trae. First launched in March, Trae is powered by the company’s flagship large language model doubao-1.5-pro and supports the integration of high-performance versions of DeepSeek R1 and V3. ByteDance claims Trae is the first AI-native integrated development environment (IDE) in China. The move underscores ByteDance’s efforts to tighten internal data security while promoting its own AI infrastructure. The international version of Trae has already gone live, and a paid subscription model was officially launched in May.