Epic describes the release as "the first Unreal Engine release built primarily with agentic workflows." Per the announcement, a handful of people directed fleets of agents to port AI tooling from the UE6 development branch and to add the…
In the News: November 9, 2026 (Midday)
Epic says Unreal Engine 5.9 Preview was built mainly by engineers directing fleets of agents in about a week, with a shorter QA pass.
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