SAN FRANCISCO: OpenAI on Tuesday (Sep 30) released Sora 2, its most advanced video generation model yet, alongside a TikTok-style social app that will let users insert themselves into AI-created scenes through a feature called "cameos". The company behind ChatGPT described the release as a major leap forward in artificial intelligence's ability to create realistic video. The system can now generate synchronised dialogue, sound effects, and physically accurate motion, according to the company. "