Meta launches Muse Spark Open, changing the landscape of US open-source large models
Meta has released the Muse Spark Open model, with parameters reaching 816B and a context window of 1M tokens. Its performance is between GLM 5.2 and DeepSeek V4.1 Flash, making it the current strongest open-source model in the U.S. The license includes several restrictions, such as requiring the product to be labeled 'Built with Muse' and needing additional licenses for revenue exceeding $200,000, sparking discussions about the open-source model.
