OpenAI Introduces Daybreak: A Cybersecurity Initiative That Puts Codex Security at the Center of — 2026-05-12

Impact Vector: AI Tools · May 12, 2026 · 3m

## Short Segments Tilde Research unveils Aurora, a new optimizer that fixes a hidden neuron death problem in Muon. Researchers at Tilde Research have introduced Aurora, an optimizer designed to address a critical flaw in the widely-used Muon optimizer. This flaw caused over 25% of neurons in MLP layers to become inactive during early training, significantly impacting model performance. Aurora's innovative approach ensures uniform updates and maintains orthogonality, leading to a 100-fold increase in training efficiency. By replacing Muon, Aurora not only enhances training efficiency but also…