Step 5 Preview spec sheet: 600B/27B MoE, 1M context, vision, finance reasoning
JaynitMakwana · x · 2026-10-09
A roundup of Step 5 Preview specs: 600B MoE with 27B active parameters, 1M context window, vision support, and focus on coding workflows, finance reasoning, and professional knowledge work. It now sits at #1 on OpenRouter Trending; the author recommends it for serious agent workflows, with an OpenRouter link to try it.
Related event: StepFun's Step 5 Preview Lands on OpenRouter, Tops Trending Chart(10 posts)→
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