#Step Code

The pairing of Step 5 Preview with an open-source Agent Harness signals that StepFun is treating agent reliability over long task horizons as a product-level problem, not just a model problem. Developers building agentic workflows can examine Step Code as an open alternative to proprietary agent frameworks from labs like OpenAI or Anthropic. The event also underscores StepFun's push to build a developer community around its stack.

官方账号阶跃星辰 Stepfun@Stepfun_AISource

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.

shao__meng@shao__mengSource