News Summary

• Lilian Weng, a cofounder of Thinking Machines Lab, said she's stepping down.
• Weng said she had been ill more often in the past seven months than at any other point in her life.
• "If I cannot give it 100% for what I should be responsible for, I fail my job," she wrote.
• Her departure follows several recent health-related step-backs by leaders in the AI industry."We'll miss you, it's been wonderful building Thinky together," said cofounder Mira Murati.