Epic says it is now using AI to write code and features for Unreal Engine, with a modest 5.9 update possible.
Confirmation: Epic EVP of Development Marcus Wassmer told This Week in Video Games that Unreal Engine code and features are being developed with AI.
Claimed fix: Wassmer says tools like Claude and Codex have stamped out "non-deterministic cooking bugs" Epic had chased for a decade. The article presents this as his claim.
What's next: A 5.9 update is possible, but would be relatively modest and cover specific systems. Most work is going into UEFN and UE6.
Launcher: Epic has said it rebuilt the Epic Game Launcher through vibe coding, and Wassmer says engineers aren't writing the bulk of the code. He also says the bigger risk is moving too slowly, not AI skepticism.
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TL;DR of the article, generated automatically.
Epic says it is now using AI to write code and features for Unreal Engine, with a modest 5.9 update possible.