Meta to open source its most powerful AI model as it takes swipe at OpenAI, Anthropic

Meta CEO Mark Zuckerberg wears the Meta Ray-Ban Display glasses, as he delivers a speech presenting the new line of smart glasses, during the Meta Connect event at the company's headquarters in Menlo Park, California, U.S., Sept. 17, 2025. Carlos Barria | ReutersMeta said it would open source its most powerful AI models and launch new ones designed for consumer devices, as it looks to rival leading labs like OpenAI and Anthropic. In an Instagram video posted Monday, CEO Mark Zuckerberg said that the company would open the weights for its latest AI model Muse Spark 1.2, meaning it can be downloaded and used by the public. Weights refer to the calculations and rules that determine how the AI works and behaves.Zuckerberg also said the company will release a new family of open-source models called Muse Glimmer, designed to run on a laptop.Shares of Meta were up 2.1% in premarket trade on Monday. They are down around 10% so far this year, as investors scrutinize Meta's spending plans and whether it can compete with major AI leaders. Zuckerberg is looking to reassure investors that the Meta Superintelligence Labs, formed last year, is making progress and the capital expenditure, forecast...