not much happened today

**NVIDIA** led open-source AI model releases with **Cosmos 3**, a comprehensive omnimodal world model unifying language, image, video, audio, and action using a Mixture-of-Transformers design, and **Nemotron 3 Ultra**, a **550B** parameter open-weight model noted for high serving speed and strong evaluation performance. The **Cosmos Coalition** was launched to foster an open ecosystem for physical AI world models. Meanwhile, **MiniMax M3** debuted as a multimodal agent/coding model with **1M context** and strong benchmark scores, gaining rapid ecosystem support from vendors like **Novita** and **Vercel AI Gateway**. However, MiniMax M3 showed some inefficiencies such as high token consumption and verbose self-check loops. These developments highlight advances in open physical AI, multimodality, and agent models with significant community and infrastructure engagement.