StepFun: Step 3.5 Flash chat
openrouter
Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
Context Inputs Outputs Input Price Cache Read Price Cache Write Price Output Price262k
0.10- -0.30

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