Meta releases Muse Spark Open, a new 'open-weight' AI model

Meta says its new open-weight AI model rivals and in some cases outperforms Chinese equivalents. Meta says its new open-weight AI model rivals and in some cases outperforms Chinese equivalents. Meta releases Muse Spark Open, a new'open-weight' AI model Meta says Muse excels at'multi-step reasoning' and'complex software engineering' as it races to catch up to Chinese rivals Meta on Thursday launched a new open-weight AI model which it claims rivals, and in some cases outperforms, similar products from leading Chinese developers. Muse Spark Open "is the most capable US open-weight model to date," Meta's chief of AI Alexandr Wang wrote on X. Unlike so-called closed models - such as Anthropic's Claude or OpenAI's ChatGPT - developers can download the parameters, known as weights and biases, of an open-weight model and modify them.