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Step 3.5 Flash

stepfun/step-3.5-flash

context
262K
modalities
text → text
capabilities
Tool use, Reasoning, Low cost

Overview

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....

Providers

Access method depends on provider and account setup.

Pricing

  • SiliconFlow

    input / 1M
    $0.10
    output / 1M
    $0.30

Use this model through Nautili

Route requests to Step 3.5 Flash through your Nautili gateway using a supported SDK or the Nautili SDK.

Connect your stack to Nautili

Route across supported providers through one control layer.