Step 5 Preview is now free in Cline.
On DeepSWE it scores ahead of Kimi K3 and GLM-5.3, making it one of the strongest open weights coding models available.
Cline makes Step 5 Preview free, citing strong DeepSWE coding scores
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Cline says Step 5 Preview is now free in its coding tool and scores ahead of Kimi K3 and GLM-5.3 on DeepSWE. The company describes it as one of the strongest open-weights coding models available. StepFun's background announcement describes Step 5 Preview as a 600B total / 27B active MoE model with 1M context and vision, and says open weights arrive on Oct 15.
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@cline
Introducing Step 5 Preview: Advancing the Pareto Frontier. Step 5 Preview is our new flagship model for agentic work, delivering frontier-level performance across software engineering and professional knowledge work, with particular strength in finance. - 600B total / 27B active MoE, with 1M context + Vision - Substantially lower task cost at comparable intelligence - Broad software engineering capabilities with sustained execution over long horizons Try Step 5 Preview: https://platform.stepfun.ai Model page: https://www.stepfun.com/step-5-preview Open weights on Oct 15.
Source: Cline · x.comPublished · added here