Step1X-Edit 1.2
Step1X-Edit 1.2, called ReasonEdit-S in its paper, adds thinking and reflection around image editing. The completed release was published on 26 November 2025.
Interpret an abstract change
The thinking stage uses the language model's knowledge to interpret the request. The reflection stage checks the generated result and can seek corrections.StepFun Step1X-Edit-v1p2 model card
Check the final image yourself
Practical guidance. A self-review loop can help with complex edits, but it is not an independent check. Compare the source and output at full size, especially text, identity and details outside the requested change.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Launch date | |
| Access | Downloadable |
| Model identifiers | Step1X-Edit-v1p2ReasonEdit-S |
| License | Apache 2.0.StepFun Step1X-Edit-v1p2 model card |
| Editing loop | Think about the instruction, edit the image, then reflect on unintended changes and whether to stop.StepFun Step1X-Edit-v1p2 model card |
Related models
- Step1X-Edit 1.1
StepFun · Step1X
An instruction-based image-editing model that also supports text-to-image generation.
Launch date Downloadable - NextStep 1 Large Edit
StepFun · NextStep
NextStep 1 Large Edit adapts the NextStep image pipeline to an input image and an editing instruction.
Launch date not confirmedDownloadable