Meta's Muse Spark AI model replaces Llama 4 on its smart glasses

Meta's Muse Spark now powers Meta AI on most of its smart glasses, replacing Llama 4 in a significant upgrade that the company says narrows the gap to leading AI systems. Announced in April, Muse Spark is the first AI model publicly released by Meta Superintelligence Labs (MSL), the group Mark Zuckerberg formed last year with billions of dollars in hiring of top AI talent.

The deployment is strategically important because smart glasses are Meta's bet on the next hardware platform, and a capable on-device-adjacent assistant is central to that vision. Swapping in Muse Spark signals that MSL's expensive talent acquisition is beginning to produce shipping products, not just research.

The move sits alongside Meta's broader 'personal superintelligence' push, including a controversial plan to use off-site activity data — collected via Meta Pixel from ad partners — to personalize feeds and AI responses. It also lands against a backdrop where Meta's open-source posture is under scrutiny: Hugging Face CEO Clement Delangue warned this week that 'concentration of power, capabilities and economic wealth is the biggest risk in AI,' implicitly pressuring labs like MSL that have moved toward more closed releases. Whether Muse Spark restores Meta's competitive standing — or simply catches it up to where rivals already were — is the open question.