Az Epic Games mesterséges intelligenciát használ az Unreal Engine kódjának és funkcióinak fejlesztésére, amit Marcus Wassmer, a cég fejlesztési alelnöke is megerősített. A mérnökök főként a Claude Code és a Codex eszközökre támaszkodnak, amelyek segítségével már nem kézzel írják a kód nagy részét, hanem az AI-t irányítják a kívánt architektúra eléréséhez.
Az AI-alapú fejlesztés már most jelentős sebességnövekedést és hibajavítást hozott. A D3D12 renderelési réteg egy részének átírása, amely korábban 3-6 heti mérnöki munkát igényelt volna, 1 hét alatt elkészült, miközben csökkent a processzorterhelés és kevesebb hiba keletkezett. Az eszközök emellett a Fortnite stabilitásának automatikus ellenőrzésében és a fájlméretek csökkentésében is segítenek.
A cég a fejlesztési folyamatait az Unreal Editor for Fortnite, valamint a készülő Unreal Engine 6 köré összpontosítja. Az Epic Games szerint a fejlesztési kockázatot nem az AI használata, hanem a túl lassú haladás jelenti, ezért a jövőben a teljes szoftverfejlesztési folyamatukat az AI köré építik.
Az eredeti szöveg (This Week in Videogames)
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Epic Games CEO Tim Sweeney has stated on social media that the company is using AI tools to “develop code for Unreal Engine.” Epic has confirmed this in a statement provided to This Week in Videogames.
This follows Sweeney’s announcement earlier in October 2026 that the company is experiencing a “huge pivot” to “retool for maximum AI acceleration.”
In a Twitter reply to ‘BenjiGameDev’ back in November 2025, Sweeney denied assumptions that Epic was using AI tools to improve, update, and build features for Unreal Engine (UE).
Revisiting their assumptions in a 23 October 2026 tweet – which comes after Sweeney’s AI pivot announcement and the release of a vibe coded update to the Epic Games Launcher – BenjiGameDev asks if “AI tools [are] being used to develop UE now?”
Sweeney replies: “Yes, we are now using AI tools to develop code for Unreal Engine.”
Given the Epic Games Launcher update, the reports that an upcoming shooter using Disney IP was given a “no hand-written code” mandate, and Epic previously announcing that the upcoming Unreal Engine 6 would be built with AI tool integration in mind, it may be unsurprising that Epic is also using AI to develop its widely adopted game engine itself.
In Epic’s June 2026 Road to UE6 blog post, it also stated that internal teams, including the engine’s engineering team, had been investigating “what works and what doesn’t for code generation.”
“What’s interesting is that most of these use cases aren’t even generating mainline Unreal Engine code, though that will probably come eventually as well,” the blog post said at the time.
After reaching out to Epic with several related questions, This Week in Videogames received responses from Executive Vice President of Development Marcus Wassmer.
“As we mentioned back at Unreal Fest in Chicago on stage and in interviews, we are definitely using AI to develop code and features for Unreal Engine,” Wassmer said. “Almost all development happening right now is being done in the dev streams attached to Fortnite, UEFN [Unreal Editor for Fortnite], and UE6. There’s a possibility of a 5.9. If we make it, it would be a relatively modest update for specific systems and will include changes developed with AI. Generally speaking though we’re working as hard as we can on UEFN and UE6.”
When asked about the specific AI tools being used and how they were being deployed to develop and improve Unreal Engine, Wassmer said:
“There are a number of tools in use but probably the most obvious ones are Claude Code and Codex with their associated AI models. They’re helping across a broad spectrum of development, with some particularly big recent wins being almost the complete elimination of non-deterministic cooking bugs which we’ve been fighting for a decade and an acceleration of work related to compressing shaders which both significantly reduce patch sizes. [Other wins include] a rewrite of a significant portion of the D3D12 rendering layer (which I estimated as needing three to six weeks of work for a single engineer, but the work was actually completed in about one week with a nice win on CPU time and fewer bugs), lots of help in keeping our internal test suites healthy as well as expanding those test suites for more coverage, etc.
“Not only that, we’ve started deploying automatic monitoring of PC stability on Fortnite that’s already detecting issues with specific driver/hardware combinations and features that would previously have taken months to root cause, as well as automatic root cause analysis and automatic fix generation that together have started to measurably improve the long tail of gnarly PC issues in Fortnite and Unreal Engine.”
“Another area of note is that we’re more able to take on some larger architectural refactors with AI than we were able to before. Developers can expect the engine to end up significantly more modular for faster iteration times, and with more ability to strip out what
