Stepfun

StepFun: Step 5 Preview

stepfun/step-5-preview

Input Price

$1.00 / 1M

Output Price

$2.70 / 1M

Context Length

1,048,576

LLM Price Calculator

Enter custom token counts to calculate exact pricing for your specific AI use case.

Input Cost
$1.00
Output Cost
$2.70
Total Cost
$3.70

About this model

Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...

Try this model in Playground

Test this model's capabilities in different AI playground environments including OpenRouter, Hugging Face, Cloudflare, and Vercel.

FAQ

StepFun: Step 5 Preview pricing FAQ

Answers about this model's pricing, context window, supported modalities, and where to try it.

How much does StepFun: Step 5 Preview cost?

Use the calculator above to estimate the cost for your expected workload. Input and output tokens are billed at separate rates, and optional provider features may add extra charges.

What is the context length of StepFun: Step 5 Preview?

StepFun: Step 5 Preview supports a context window of up to 1,048,576 tokens. Your provider may reserve part of that capacity for generated output or system instructions.

Which modalities does StepFun: Step 5 Preview support?

Listed input modalities: text, image, video. Listed output modalities: text. Confirm feature availability with your chosen provider before integrating the model.

Where can I try StepFun: Step 5 Preview?

Use the Playground links above to check whether the model is currently available from those third-party services. Access, features, and pricing can vary between platforms.