FFree
StepfunClosed Weights

Step 5 Preview

step-5-preview

Best Input Price

$0.00 / 1M

StepFun's next-generation flagship base model for coding and professional knowledge work, with native text, image, and video input and a 1M-token context window

Context Window

1,024,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2026-09-16

Inference Providers (9)

ProviderModel IDContextInput / 1MOutput / 1MAction
StepFun Step Plan (Global)step-5-preview1,000,000$0.00$0.00Docs ↗
StepFun Step Plan (China)step-5-preview1,000,000$0.00$0.00Docs ↗
StepFun (China)step-5-preview1,000,000$0.96$2.74Docs ↗
EmpirioLabs AIstep-5-preview1,024,000$1.00$2.70Docs ↗
NanoGPTstepfun/step-5-preview1,000,000$1.00$2.70Docs ↗
Vercel AI Gatewaystepfun/step-5-preview1,000,000$1.00$2.70Docs ↗
StepFun (Global)step-5-preview1,024,000$1.00$2.70Docs ↗
Eden AItencent/step-5-preview1,000,000$1.00$2.70Docs ↗
AIHubMixstep-5-preview1,000,000$1.08$3.09Docs ↗