Morning Edition · Sunday, November 8, 2026Published at 1:30 AM EST · New York

Meta sells closed Muse models at about a quarter of rival prices while releasing an 816-billion-parameter open-weight Muse Spark

Muse Spark 1.1 lists at $1.25 per million input tokens and $4.25 per million output tokens, and Muse Spark Open needs at least 700 gigabytes of accelerator memory in the NVFP4 four-bit format.

Meta now offers two product lines within its Muse family. Muse Spark, announced in April, was the company's first frontier model released without open weights, a change from its Llama strategy of releasing open weights. Meta opened a paid M…