Step 5 Preview free for a week across several coding tools
AI summary
StepFun says its flagship model for agentic and professional work, Step 5 Preview, is free for one week in OpenCode, Nous Portal (with Hermes Agent), Cline and Kilo. Partners describe it as a 600B-parameter MoE with 27B active per token, a 1M-token context and vision, with OpenCode noting zero data retention. Cline claims it scores ahead of Kimi K3 and GLM-5.3 on DeepSWE, while Nous says its 33.89 Hermes Index score matches GPT-6 Luna — both are partner claims.
In-depth insight
It gives developers a low-cost way to try a flagship agentic coding model across multiple tools, though the benchmark claims come from partners rather than independent testing.