What's new and changed in Synthetic Data Generator

Synthetic Data Generator updates can include new features and fixes. Releases are listed in reverse chronological order so that the latest release is at the beginning of the topic.

You can see a list of the new features for the platform and all of the services at What's new in IBM Software Hub.

Installing or upgrading Synthetic Data Generator

Ready to install or upgrade Synthetic Data Generator?

  • To install Synthetic Data Generator along with the other IBM® Software Hub services, see Installing IBM Software Hub.
  • To upgrade Synthetic Data Generator along with the other IBM Software Hub services, see Upgrading IBM Software Hub.
  • To install or upgrade Synthetic Data Generator independently, see Synthetic Data Generator.
    Remember: All of the IBM Software Hub components associated with an instance of IBM Software Hub must be installed at the same version.

IBM Software Hub Version 5.4.0

A new version of Synthetic Data Generator was released in June 2026 with IBM Software Hub 5.4.0.

Operand version: 13.0.0

This release includes the following changes:

New features
This release of Synthetic Data Generator includes the following features:
Select a specific model to validate unstructured synthetic data

You can now select a specific LLM to use for the LLM-as-Judge validator model. The validator model validates the unstructured synthetic data that the generation LLM produces through the knowledge data builder. Previously, the model that you picked for generation was automatically used for validation as well, and you could not pick a different model for validation.

Updates
The following updates were introduced in this release:
  • You can now use the unstructured synthetic data that you generate to tune models in Tuning Studio. The output from the data builders is formatted to work with Tuning Studio.
  • When using the Synthetic Data Generator to generate unstructured data, you now have the option to overwrite an existing file with the new data that you generate.
Customer-reported issues fixed in this release
For a list of customer-reported issues that were fixed in this release, see the Fix List for IBM Cloud Pak for Data on the IBM Support website.
Security issues fixed in this release
The following security issues were fixed in this release:

CVE-2026-44432, CVE-2026-44431, CVE-2026-44248, CVE-2026-43870, CVE-2026-43869, CVE-2026-43868, CVE-2026-42587, CVE-2026-42586, CVE-2026-42585, CVE-2026-42584, CVE-2026-42583, CVE-2026-42582, CVE-2026-42581, CVE-2026-42580, CVE-2026-42579, CVE-2026-42577, CVE-2026-42440, CVE-2026-42198, CVE-2026-42027, CVE-2026-41607, CVE-2026-41606, CVE-2026-41605, CVE-2026-41604, CVE-2026-41603, CVE-2026-41602, CVE-2026-41417, CVE-2026-40682, CVE-2026-33814, CVE-2026-29111, CVE-2026-25645, CVE-2026-6357, CVE-2026-6100, CVE-2026-5795, CVE-2026-4878, CVE-2026-4786, CVE-2026-3260, CVE-2026-2332, CVE-2026-0994

CVE-2025-48431, CVE-2025-14512, CVE-2025-14087, CVE-2025-11143

RHSA-2026:15971, RHSA-2026:14791, RHSA-2026:13677, RHSA-2026:12441, RHSA-2026:10949, RHSA-2026:10745