StepFun·Step Image

Step1X-Edit

StepFun’s open image-editing model for object addition/removal, background changes, action changes, and style transfer through natural-language instructions.

CurrentImage generationMultimodalOpen weights

MODEL NUMBER350

First public date: 2025-04-25
Organization: StepFun
Family: Step Image

Specifications

Only published specifications are shown.

Input modalities: Text · Image
Output modalities: Image
Open weights: Yes↗
License: Apache-2.0↗
Status: Current

Overview

StepFun’s open image-editing model for object addition/removal, background changes, action changes, and style transfer through natural-language instructions.

Why it mattered

Step1X-Edit established StepFun’s image-editing line, later extended into reasoning-edit and API versions.

Architecture & capabilities

Model capabilities

Image generationImage editing

Release history

2025-04-25Open weights

Step1X-Edit inference code and weights were released.

View source

Related models

Select a card to view the related model.

VariantStep Image Edit 2View details →

Sources

Step1X-Edit official repositoryStepFun · Checked 2026-09-22

Official · Verified

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