The Unreal Engine AI training EULA changed on 29 October 2026, giving developers more freedom to train AI models with Unreal Engine technology and eligible MetaHuman materials. Epic Games removed two restrictions on engine source code and MetaHuman content. Crucially, the change does not give Epic permission to train on developers’ own games or assets.
Epic announced the revision on 29 October and logged it in its EULA change history on 30 October. Existing developers can accept the updated terms when they choose; new users are prompted during onboarding. This is a licence change, not an engine patch or a new feature developers must switch on.
What changed in the Unreal Engine AI training EULA?
Epic removed two restrictions from Section 6(e), General Restrictions. One had barred using Unreal Engine technology, including source code, as training input for generative AI. It also applied to prompts where the AI programme trained on the supplied input.
The other restriction concerned MetaHuman characters and animation curves, together with certain rendered output created to replicate MetaHuman functionality. The older wording prohibited using those materials for AI or machine-learning training, testing and databases. Under the revised agreement, those two prohibitions no longer apply.
| Previous restriction | Change in October 2026 |
|---|---|
| Unreal Engine technology or source as AI-training input | The specific restriction is removed for users under the updated EULA |
| MetaHuman characters, animation curves and covered rendered outputs in AI/ML training or testing | The corresponding prohibition is removed under the updated EULA |
This is useful if a studio wants to develop its own tools using Unreal content. However, it doesn’t grant permission to train on any third-party model, soundtrack, photograph or character that happens to be inside a project. Those materials may carry their own licences and usage limits.
Does the Unreal Engine AI training EULA give Epic rights to your game?
No. Epic says its revision removes a restriction on developers; it does not give Epic permission to train AI on their code, games, characters or assets. The developer’s ability to choose training is separate from another company’s right to access or use the material.
The standard licence still governs ownership and other uses of Unreal Engine. Accepting this change is not an instruction to upload a game to Epic for model training, nor is it a transfer of the developer’s intellectual-property rights.
How do you accept the new Unreal Engine licence?
Existing developers can use Epic’s Unreal Engine EULA acceptance page to review and choose the updated agreement. New users are prompted to accept the current terms. If your studio uses a custom licence, check the contract you actually signed: Epic says studios with similar restrictions in individual agreements should speak with their Epic representative.
The Unreal Engine AI training EULA revision applies to licensed technology across versions of the engine, but the licence governing any particular content still matters. For example, older MetaHuman cloud tools have had separate licensing, while MetaHuman workflows under the Unreal Engine EULA fall under the revised terms.
Does this change cover MetaHuman, Fab and Fortnite islands?
MetaHuman: Epic specifically includes MetaHuman Creator, MetaHuman Animator and Mesh to MetaHuman workflows licensed through the Unreal Engine EULA. Check the actual agreement if you’re using an older or separately licensed version.
Fab: creators can still mark their assets NoAI. The engine licence update doesn’t override those marketplace permissions. Our Fab assets guide explains why checking an asset licence separately matters.
UEFN and Verse: this change does not cover Fortnite islands, UEFN projects or Verse code. They are governed by the Fortnite Developer Rules and Terms. That remains true even though UEFN is related to Unreal technology. See our UEFN creator coverage for a separate programme with its own rules.
Unreal Engine AI training EULA frequently asked questions
Must developers train AI models now? No. Epic has expanded what developers may choose to do; it has not made training mandatory. A studio can continue developing normally.
Can you train a model on Unreal Engine code? The specific restriction on using licensed engine technology and source as training input has been removed. Other licence obligations still apply.
Can you train on a purchased Fab asset? Check that item’s permissions and NoAI designation. A purchased asset is not automatically cleared for this purpose.
Is there a change for Fortnite Creative developers? No. UEFN, Verse and island content remain subject to Fortnite’s separate rules, not this EULA amendment.
The Unreal Engine AI training EULA change is about developer choice. Read the revised agreement, confirm which licence covers the material you intend to use, and don’t confuse permission to train your own model with permission for Epic to train on your work.
Official Epic source: Unreal Engine developers can now choose to train AI models on their projects.
