Technology dubbed generative AI has captured attention and investment over the past year by showing that algorithms can produce seemingly coherent text and aesthetically pleasing images when given a short text prompt. The technology relies on AI models trained with lots of data, in the form of text or images scraped from the web, and is also at work in the viral chatbot ChatGPT. Some AI researchers are experimenting with similar techniques for generating video and 3D content, but this is mostly at an early stage.  

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