StepFun releases open-source Step Code CLI agent under MIT License
The release joins a crowded field of open-source coding agents from Chinese labs, including MiniMax Code, Zhipu's ZCode, Qwen Code, Kimi Code and DeepSeek's DSH, giving developers more MIT-licensed CLI options to self-host or benchmark. Since the Multi-Frame score comes from StepFun's own benchmark, cross-checking it against Terminal-Bench results from rival agents is the practical way to compare. The 75-day Plus subscription also offers a low-cost way to test Step 5 Preview before committing.