Meta is back to releasing open-source models, with the release of Muse Spark Open.
They say it’s the most powerful open-source model in the US to date.
It’s been deeply optimized for Apple’s MLX framework.
This 800B-parameter model can actually run locally on two M5 Ultra Mac Studios.
It excels at long-running tasks, complex software engineering, and multi-step reasoning.
It has 816B total parameters, 42B active parameters, supports a 1T context window, and natively handles multimodal inputs: text, images, video, and audio.
Its benchmark scores are roughly on par with K3 and GLM-5.3.
It feels like the whole US AI scene is making progress this time around—every company has something new.
They say it’s the most powerful open-source model in the US to date.
It’s been deeply optimized for Apple’s MLX framework.
This 800B-parameter model can actually run locally on two M5 Ultra Mac Studios.
It excels at long-running tasks, complex software engineering, and multi-step reasoning.
It has 816B total parameters, 42B active parameters, supports a 1T context window, and natively handles multimodal inputs: text, images, video, and audio.
Its benchmark scores are roughly on par with K3 and GLM-5.3.
It feels like the whole US AI scene is making progress this time around—every company has something new.