StepFun: Step 5 Preview (stepfun/step-5-preview) is a chat model from openrouter with a 1.0M-token context window; open-weight; capabilities tools, reasoning, vision; input image, text, video; output text.
1.0MContext
64KMax output
$1$ / 1M in
Pricing
Input
$1 / 1M tokens
Output
$2.7 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: openrouter. Last verified 2026-10-30.