Meta Launches Open-Weight Multimodal Model Muse Spark Open, Total Parameters Reach 816 Billion

According to official Meta announcements, Meta has officially released the open-weight multimodal model Muse Spark Open. The model features a total parameter count of 816 billion (with 42 billion activated parameters), supports a 1 million token (1M-token) context window, focuses on code writing and Agent workflows, and possesses capabilities for long-horizon complex software engineering and multi-step reasoning.