# StepFun open-sources Step Code v0.1.0 under the MIT License

StepFun has released the Step Code v0.1.0 command-line tool as open source under the MIT License, including one-command static site publishing with StepPage. StepFun reports 80.9% on Terminal-Bench 2.1 and 73.3% on Multi-Frame, its 150-task long-horizon benchmark.

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Source: StepFun · Published 9/22/2026, 09:51:11

StepFun has open-sourced Step Code v0.1.0 under the MIT License. The CLI handles a development loop in one place, from reading and editing code to running tests and shipping, and it can publish a static site with one command through StepPage.

StepFun reports 80.9% on Terminal-Bench 2.1 in its evaluation and 73.3% on Multi-Frame, its 150-task long-horizon benchmark. The source code is in the [Step-Code](https://github.com/stepfun-ai/Step-Code) repository on GitHub.

Tags: StepFun, Step Code, open source, CLI, Terminal-Bench

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