Meta Platforms has released a new open-source artificial intelligence model that outside developers can freely use, accompanied by a lengthy essay from CEO Mark Zuckerberg warning of the dangers of concentrating advanced AI under a handful of companies, institutions, or governments.
The company on Monday published Muse Glimmer, a lightweight model designed to run directly on a personal computer, under what it described as a “permissive” open-source license. Meta said developers would also gain access to a more powerful system, Muse Spark 1.2.
Shares of Meta climbed following the announcement, reflecting investor interest in the company’s renewed push to differentiate its AI strategy from rivals.
In the accompanying essay, Zuckerberg laid out his vision for the future of the technology and argued that open access offers a fairer path for AI development. He also included policy recommendations aimed at keeping the United States ahead of competitors, including China.
Zuckerberg warned that if AI “superintelligence” ends up controlled by “a select few individuals, businesses, governments, or even AI itself, then that will naturally lead to outcomes that are less favorable for everyone else.” He argued the priority should be ensuring advanced AI is “broadly distributed” to empower billions of users.
The essay also appeared to take aim at rivals such as OpenAI and Anthropic, though Zuckerberg did not name specific companies. Both firms, along with Google, have declined to release their most advanced models as open source.
Meta has long positioned itself as a proponent of open-sourcing AI, most notably through its Llama family of models. But the company has faced difficulty keeping pace with competitors that have retained tighter control over their systems.
The release follows a period of strategic turbulence for the company. Earlier this year, Meta restructured its AI operations and committed billions to talent and infrastructure following setbacks with an earlier model generation.
The debate over open versus closed AI development has become a central fault line in the industry. Proponents of open models argue they accelerate innovation and broaden access, while critics contend that freely distributing powerful systems raises safety and misuse concerns.
The launch also arrives as Washington and Beijing compete for leadership in the sector, with Zuckerberg framing open development as a means of preserving U.S. competitiveness.
Meta is expected to detail additional capabilities for the Muse models in the coming weeks, as developers begin testing the systems and the broader industry weighs the implications of its open-source approach.