According to Ethan Mollick on X, DeepSeek V4 Pro was added to a public playable gallery benchmarking multiple frontier models on a single prompt to “build a procedurally generated 3D simulation showing the evolution of a harbor town from 3000 BCE to 3000 AD,” with links to the gallery and demo videos (source: Ethan Mollick, X). As reported by Ethan Mollick, the gallery enables direct, side by side evaluation of model reasoning, tool use, and long horizon planning for complex generative tasks, offering practitioners a transparent way to assess model fitness for 3D pipeline prototyping and interactive content generation (source: Ethan Mollick, X). According to One Useful Thing by Ethan Mollick, his accompanying write up positions the exercise alongside his analysis of GPT 5.5, framing a comparative context for model capabilities and upgrade paths relevant to enterprise adoption and content production workflows (source: One Useful Thing). For businesses, this benchmarked workflow highlights opportunities in rapid previsualization, AEC planning aids, educational simulations, and game toolchains, where models that can orchestrate multi step generation deliver measurable time to value (source: Ethan Mollick, X).