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Step 5 Preview

At a glance

StepFun's flagship agentic model, a 600B-parameter MoE with 27B active.

1M ctx$1.00/$2.70 per M
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AI Output
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Benchmarks
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Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
1M
Context
64K
Max output
Oct 2026
Released
Capabilities
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.00/M tokens
Output$2.70/M tokens
Cache read$0.05/M tokens
Chat with Step 5 PreviewGo to model