Meta Superintelligence Labs ships Muse Spark, its first frontier model and Meta's first without open weights. Independent testing shows it closing the gap to OpenAI, Anthropic, and Google, but the competition isn't standing still.

Meta’s first large language model under AI chief Alexandr Wang rolled out Wednesday, to eventually reach Instagram and Facebook.

Meta says the model narrows the performance gap with OpenAI, Anthropic and others.