Epic Will Strip AI Training Restrictions From Unreal Engine EULA

Epic Games is removing EULA restrictions that currently prohibit training AI models on outputs from Unreal Engine and MetaHuman, CEO Tim Sweeney announced in a post on X.

The news arrived almost as an aside. Sweeney was responding to an October 26 Kotaku article that accused Microsoft and Epic of hypocrisy — going all-in on AI technology while shutting down fan-made, AI-coded recreations of their own games. His rebuttal casually confirmed the licensing change.

"Does Epic restrict AI training on outputs of Unreal Engine and MetaHuman?" Sweeney wrote. "Yes currently but we are working to remove this restriction from EULA terms, though each game using these tools is released under terms of the developers' choosing which can allow or restrict AI training."

What does this change for studios?

The current EULA blocks any use of engine output for AI training. Once the update lands, that prohibition disappears at the tool level. Studios shipping Unreal Engine or MetaHuman (Epic's 3D animation software) projects will decide their own stance — per game, per release. Some will allow scraping of their assets for model training. Others will lock it down.

In practice, that puts a new decision on every developer's plate: what AI-training terms ship with your game. Publishers with valuable IP now write policy, not just code.

It also marks a real shift for Unreal Engine itself, which previously drew a hard line against any AI training on its outputs. Epic now describes its direction as "AI-first," and the EULA change moves the company's licensing in line with that posture.

Sweeney's defense: copyright, not hypocrisy

The Kotaku piece argued there's no functional difference between Epic pursuing an AI-first model — presumably built on scraped data — and users recreating Epic's own Fortnite in a browser with AI. Sweeney rejected the framing outright.

"This conflates a number of different things," he wrote. "Does Epic let people use Fortnite IP without permission or compensation? No."

His position: Epic's takedowns of Fortnite ports are straightforward copyright and licensing enforcement, separate from the AI training question. Whether that distinction satisfies critics is another matter.

A swipe at Valve along the way

Sweeney's EULA announcement sits inside a broader posting surge. He has spent the past week evangelizing AI in software development on X, posting over 50 times in seven days, including 11 posts in a single 24-hour stretch.

He also took aim at Valve, which requires developers to disclose AI usage on Steam store pages. "Forcing developers to write a political statement to be used against them by the hate mob they're helping organize is abhorrent," Sweeney wrote. Valve, for its part, does not characterize its disclosure requirement as a political statement.

Announcing policy on X is nothing new for Sweeney, who has used his personal account for major company decisions for years. His cadence, though, has jumped noticeably in the last two weeks.

Game Developer has contacted Epic for details on the EULA changes and has not received comment.

No date is set for the updated terms. Watch for the revised EULA text — and whether MetaHuman-specific carve-outs appear alongside it.