- What changed
- Meta released Muse Spark Open, an 816B-total, 42B-active MoE open-weights model scoring 39 on Artificial Analysis with multimodal input and a 1M context window.
- Why you should care
- Muse Spark Open sets a new benchmark score for US open-weights models, offering high intelligence alongside multimodal capabilities and flexible quantization options.
- Your move
- Watch. Monitor real-world deployment costs and agentic performance before making a broad adoption commitment.
- What to watch next
- Future benchmark updates measuring improvements in agentic evaluation tasks for large open-weights Mixture of Experts models.
- Event
- release
- Event date
- Oct 17, 2026
- Relevant to
- General AI readers
