Key Info
Step 5 Preview, StepFun's flagship model for agentic and professional work, is available free for one week inside the Cline coding agent. On the DeepSWE benchmark it scores ahead of Kimi K3 and GLM-5.3, positioning it as one of the strongest open-weight coding models available.
Highlights
- One-week free access to Step 5 Preview within Cline
- Positioned as a flagship model for agentic and professional workflows
- Outscores Kimi K3 and GLM-5.3 on DeepSWE
- Marketed as among the strongest open-weight coding models