Using Step-2 on StepFun

Implementation guide · Step · StepFun

Serverless

StepFun exposes Step-2 through model ID step-2. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-06-29. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at StepFun and generate an API key.
  2. 2
    Use the StepFun SDK or REST API to call step-2 — see the documentation for request format.
API PortalDocumentation

Code Examples

See StepFun documentation for integration details.

Pricing on StepFun

Capabilities

VisionMultimodalJSON / Tool use

About Step-2

Step-2 is StepFun's Step model with multimodal text and image input. It offers a 256K-token context window.

Full model details →

Model Specs

Released2024-09-01
Parameters1T (MoE)*
Context256k
ArchitectureMixture of Experts

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Step-1Step-1.5VStep 3.7 Flash
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Provider

StepFun