OpenCraft

stepfun · chat model

Try Step 5 Preview onlinenew

stepfun/step-5-preview

Added to OpenRouter: 8 Oct 2026

First seen here: · Specs updated:

Use Step 5 Preview in your browser. Explore pricing and capabilities below, or start a chat in OpenCraft.

Input price$1.00per M tokenscheaper than 26% of chat models
Output price$2.70per M tokenscheaper than 35% of chat models
Cache read$0.10per M tokens
Context window1Mtokensof the largest window in the catalog (10M)

Step 5 Preview pricing: what a turn costs

Estimates from the published token rates above — real turns vary with tool calls and transcript length.

  • Quick answer2K tokens in, 600 out$0.0036
  • 10-slide deck build60K tokens in, 9K out$0.084
  • 150-page PDF read200K tokens in, 4K out$0.211

Specs and listed prices from OpenRouter. Actual usage cost depends on the serving provider.

How to use Step 5 Preview

  1. Select “Try Step 5 Preview online” to open OpenCraft with this model selected.
  2. Sign in or create an account if prompted.
  3. Type a question or describe a task, then send your message.

To compare answers, start a separate chat with another model and use the same prompt.

Step 5 Preview capabilities

tool-usevisionreasoning

text, image, video in → text out

Create with OpenCraft

See example outputs and find a workflow for your next project.

Create an editable presentation with AIHow to generate a report with AIHow to generate a spreadsheet with formulas you can check