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Stepfun Step-5-Preview released! (600B/27B-1M Context)
Step 5 Preview is StepFun's flagship model for agentic work.
阶跃星辰于2023年4月成立，以“智能阶跃，十倍每个人的可能”为使命。阶跃星辰坚定自研超级模型，积极布局算力、数据等关键资源，发挥算法和人才优势，已完成 Step-1 千亿参数语言大模型和 Step-1V 千亿多模态大模型的研发，在图像理解、多轮指令跟随、数学能力、逻辑推理、文本创作等方面性能达到业界领先水平。.
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Step 5 PreviewStep 5 Preview Our frontier model for complex work and agentic tasks.
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StepFun joins the frontier: a previously non-frontier Chinese lab (StepFun) released a Kimi K3-level model, 3 times cheaper per Artificial Analysis
StepFun releases Step 5 Preview, scoring equally to Kimi K3 (max) (44), at 1/3 the price, and stands firmly on the Pareto line of cost/intelligence.
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StepFun 3.7 Flash
StepFun dropped Step 3.7 Flash, 196B total / 11B active MoE, runs locally on 128GB RAM
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Stepfun Step 3.5 Flash? : r/SillyTavernAI
Has anyone used or tried this model? I see it's free on OR, and I see it as a cheap option on other platforms as well. I tried one message and it seems ...
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StepFun Step 5 Preview scores 44 on Intelligence Index at ...
Artificial Analysis: StepFun Step 5 Preview scores 44 on Intelligence Index at ~2.8x lower cost than Kimi K3. Artificial AnalysisVerified. @ ...
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Step 5 Preview, a 1M-context MoE from StepFun, shows up ...
Step 5 Preview, a 1M-context MoE from StepFun, shows up on ... Stepfun made a close to SOTA model with 3.5. They got overtaken quickly ...
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Observed website styles · partial · Nov 11, 2026
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Fallback: system-ui, sans-serif
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