Mark Chen@markchen90Very excited to welcome @NoamShazeer to OpenAI as our new lead for architecture research! His work on transformers, MoE, and efficient decoding have shaped modern AI. He’s extremely AGI-pilled and is super thoughtful about making it all go well. Welcome, Noam!Opens with an observation
Mark Chen@markchen90We launched o3 and o4-mini today! Reasoning models are so much more powerful once they learn how to use tools end-to-end. Some of the biggest lifts are coming in multimodal domains like visual perception (see how it solves a maze in our blogpost: t.co 🤯)Opens with an announcement
Mark Chen@markchen90We’re excited to launch the OpenAI Safety Fellowship - supporting rigorous, independent research on AI safety and alignment, including areas like evaluation, robustness, and scalable mitigations. Applications are open through May 4, 2026!Opens with an observation