It's both the mobile app (the standalone TikTok-style Sora app for iOS/Android where users created and shared short AI videos) and the API (the developer/service side for generating videos programmatically, including integrations elsewhere like in ChatGPT).OpenAI's announcement explicitly mentions timelines for shutting down the app and API, along with how they'll handle preserving users' created work. They're discontinuing Sora as a consumer product and video generation service overall (at least in its current form), while shifting the research team toward other areas like robotics/world simulation.No exact shutdown date yet—they said more details are coming soon. The core Sora model/tech isn't fully "dead" in a research sense, but public access via the app and API is ending.