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Back to No.004 AI Product Updates: New Features and ReleasesUpdated 11 hours ago
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StepFun releases Step 5 Preview model

StepFun released Step 5 Preview, a 600B total / 27B active MoE model with 1M context, vision, and strength in software engineering and finance, available in StepFun AI Studio and via API.

🚨 AI News | TestingCatalog
@testingcatalogArchived 2026.09.21Originally posted 2026.09.20
StepFun releases Step 5 Preview model
🚨 AI News | TestingCatalog @testingcatalogOriginally posted 2026.09.20
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StepFun released Step 5 Preview, a new 600B total / 27B active MoE model with 1M context. > Step 5 Preview comes with vision capabilities and proficiency in software engineering and finance tasks. > It is now available in StepFun AI Studio and APIs. Pareto is a new front line 👀

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x.com/testingcatalog/status/2101591464916451666Archived 2026.09.21 10:25
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