not much happened today

**OpenAI** announced their "12 Days of OpenAI" event with daily livestreams and potential releases including the **O1 full model**, **Sora video model**, and **GPT-4.5**. **Google DeepMind** released the **GenCast weather model** capable of **15-day forecasts in 8 minutes** using TPU chips, and launched **Genie 2**, a model generating playable 3D worlds from single images. Leading vision researchers **Lucas Beyer**, **Alexander Kolesnikov**, and **Xiaohua Zhai** moved from DeepMind to OpenAI, which is opening a Zürich office. Criticism arose over OpenAI's strategy and model quality compared to **Anthropic** and **Claude 3.5 Sonnet**. On Reddit, a modified **llama.cpp** supports **Nvidia's Llama-3_1-Nemotron-51B**, matching performance of larger 70B models via NAS optimization.