Mark Zuckerberg attacks ‘closed’ AI rivals as Meta returns to open models

Mark Zuckerberg introduced Muse Glimmer, a compact open-weight AI model designed for agentic tasks. Meta plans to release an open-weight version of its most powerful model, Muse Spark, soon. Zuckerberg criticized closed AI rivals like OpenAI and Anthropic, arguing that superintelligence should be accessible to everyone. He urged Washington to lower barriers for US open-source developers to outperform Chinese competitors, positioning Meta as a leader in providing powerful AI tools freely to the global community.