Project AURIONAI Use-Cases Research & Innovation
StepFun
image generation

Step1X-Edit

StepFun open framework for general image editing from text instructions.

StepFunStepFunChina
Animated gallery of image edits generated by Step1X-Edit.
Levelmodel
Classimage generation
Parametersnot in the notes
Contextnot in the notes
Released23 Apr 2025
Opennessopen weights permissive
Runs onnot in the notes
Statusactive

R&D Topics

Instruction-based image editing and inpaintingexemplar

Identity

Developer
StepFun
Family
not in the notes
Released
23 Apr 2025 sourcesregistry date
Weights published
23 Apr 2025
Record checked
12 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
not in the notes
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Context length
not in the notes
Input
text, image
Output
image
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
open weights permissive
Licence
Apache License 2.0 sources
Access routes
open weights download, API
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. arxiv.org/abs/2504.17761 https://arxiv.org/abs/2504.17761
  2. huggingface.co/stepfun-ai/Step1X-Edit https://huggingface.co/stepfun-ai/Step1X-Edit
  3. replicate.com/zsxkib/step1x-edit https://replicate.com/zsxkib/step1x-edit

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Step1X-Edit", https://aurion.semai.id/models/stepfun-step1x-edit/, records of October 2026.