StepFun releases Step-5-Preview: 600B/27B-active flagship with 1M context
ResearchCrafty1804 · reddit · 2026-10-15
StepFun has released Step-5-Preview on Hugging Face (Step-5-Preview-BF16 weights), a 600B-total / 27B-active flagship model with 1M context. Positioned for agentic work, it claims frontier-level performance on software engineering and professional knowledge tasks, with particular strength in finance.
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