Reka launches the 19B Rho-1: a single model capable of processing text, images, video, and robotic actions simultaneously.

Beating AI Express (from Dongcha) reports: U.S. AI startup Reka, founded by former researchers from DeepMind, Google Brain and Meta FAIR, has launched its 19-billion-parameter model Rho-1. The model can process text, images and video in a single conversation, and also output robotic actions. For example, it can first generate a lighthouse image, animate the lighthouse, modify the weather in a video, and then ask about the differences between two videos—all generated content is retained in the context, so there is no need to use another separate model for processing. It also supports receiving instructions mid-video generation: when a video is being generated, users can temporarily request changes to the weather, movement direction or other elements, and subsequent frames will be adjusted accordingly. The base version generates content at approximately 0.79 times real-time speed; the distilled version reduces generation steps from 99 to 8, and Reka measures that it can produce a 5.3-second video in about 1 second. Robotic control is integrated into the same model: Rho-1 predicts what the camera will see next while outputting robotic action signals, eliminating the need for a separate planning model. Currently, official demonstrations are still based on LIBERO simulation tasks, with no physical robot test results released. Similar unified models have emerged this year, such as NVIDIA Cosmos 3, which can also unify the processing of text, images, video, audio and actions. Rho-1 focuses more on continuous interaction, highlighting repeated generation, modification and reasoning within the same context. It was trained from scratch using 320 H100 GPUs over approximately 3 months. The current video resolution is 672×384; long videos may still have frame structure drift, and video localization and partial editing remain unstable. The model is currently a research preview, with weights and APIs not yet open.