Step 5 Preview
by StepFun
Today's price · per 1M tokens
Input
$1.00
per 1M tokens
Output
$2.70
per 1M tokens
Blended
$1.43
blended $/1M — 3:1 weighted input:output
Cached input
$0.050
5% of input — prompt caching
Price receipt
We read StepFun's own pricing page on and found step-5-preview listed with a price on the same row — that read is where the number above comes from, recorded as a new model. We keep the page text we read; its content hash is ca8a14ccf4.
Overview
StepFun's new flagship, released 2026-10-08 as a preview on its Open Platform and built for agentic work, coding and long-document tasks. It takes text, image and video input with a 1M-token context and up to 64K output tokens, and output tokens include its reasoning. StepFun has not released weights, so it is API-only. $1.00/$2.70 per 1M tokens.
Capabilities
struck through = not supportedSpecifications
- Provider
- StepFun
- Context window
- 1M tokens
- Modality
- text, image, video
- Parameters
- Proprietary
- Open source
- No — proprietary
- Released
- Status
- Preview
- Last updated
- Tags
Availability verified: — listed on StepFun's own page