SimDiff Automation integrates Simulink into modern DevOps. This demo gives an overview of some of its features. Request a free trial and try it on your models!

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SimDiff Automation provides seamless automated comparison and reporting within your pipeline. For a full-featured experience on your local workstation, see SimDiff Workstation. For an interactive visual review of changes in Simulink models, see SimDiff Review.

Integrating SimDiff Automation with GitLab

SimDiff Automation integrates with GitLab to allow merge request reviewers to see Simulink model changes visually.

Screenshot of a desktop with the Fault-Tolerant Fuel Control System model open in Simulink, an empty Git terminal, and a GitLab merge request titled 'Merge Dev to Master' that is ready to merge.

In GitLab a pipeline is a series of automated steps that run in the background in response to repository events. When a change to the model is pushed, GitLab sees the new commit and kicks off SimDiff Automation in a pipeline to compare the new version of the model with the previous one. A Peer Review File is generated and attached to the merge request.

Screenshot of the same desktop after a push: the terminal shows the commit and the push to the dev-fuelsys branch, and the GitLab merge request is creating a pipeline.

A simple YAML file triggers the pipeline. It uses the git difftool command to run SimDiff Automation on the two versions of the model, then uploads the Peer Review File to the merge request as an artifact. Our Support page has articles that explain how to configure these files for GitLab, GitHub, and Azure DevOps.

Once the pipeline passes, the Peer Review File can be downloaded from the merge request.

Screenshot of the GitLab merge request after the pipeline has passed, with the merge request ready to merge.
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The SimDiff Peer Review File shows all the changes done to the model. It identifies the models compared along with commit IDs, and its comparison metrics help assess the impact of the commit.

Screenshot of the SimDiff Peer Review File open in a browser beside the model, showing the repository, the model, the left and right revisions, a summary of comparison metrics, and a table of contents.

It includes screenshots of the models and the list of differences. Changes are color-highlighted in the screenshots, and the tables underneath list the deleted elements and the changed attribute values.

Screenshot of the System section of the Peer Review File: the left and right models side by side with changes highlighted, a table of deleted elements, and a table of changed attributes.

It’s much better to see this information inside SimDiff, so the Peer Review File has a link that opens it in SimDiff. There, two trees represent the model hierarchies. Double-click a model element to see it in SimDiff’s Model Viewer. Neither Simulink nor MATLAB is required to view the model.

Screenshot of the Peer Review File open in SimDiff Workstation: the left and right model trees with changed elements highlighted, the attributes pane, and the Model Viewer showing the left and right models.

This was just a quick overview of SimDiff Automation. Please contact us to learn more!

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Download SimDiff Automation

SimDiff Automation can be downloaded from the links below.

You will need a license key in order to use and run SimDiff Automation. If you don’t have a key already, please request a free trial license of SimDiff Automation , or if purchasing a license, please see our licensing and pricing page .

2026a.1.9 Windows 64-bit Version

2026a.1.9 Linux 64-bit Version

System Requirements for SimDiff Automation

SimDiff Automation can run on Windows, Linux, or within a Docker image.

SimDiff Automation does not require MATLAB/Simulink to run or to compute model file differences. However, it is needed to include model screenshots in reports.

If you have any questions about compatibility with your particular configuration, please contact us.