Researcher · Founder · Engineer
John Mullan
Current role not listed
Mullan co-founded Hotshot, whose small team trained three generative-video foundation models before xAI acquired the company in 2025. The team joined xAI to continue scaling video generation on its Colossus computing cluster.
Career & education
SpaceXAI
HotshotEducation
University of EdinburghWork and education history is primarily focused on AI-relevant roles and may not be comprehensive.
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Reviewed August 9, 2026 · Checked for accuracy and new information.