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Mark Zuckerberg Returns to X to Announce New AI Model

Meta Platforms (Meta) CEO Mark Zuckerberg has returned to the X platform (formerly Twitter) after an absence of over three years. He used the platform to announce the release of a new artificial intelligence tool, Muse Spark 1.1.

9 July 2026
Mark Zuckerberg Returns to X to Announce New AI Model

Meta Platforms (Meta) CEO Mark Zuckerberg has returned to the X platform (formerly Twitter) after an absence of over three years. He used the platform to announce the release of the company's new artificial intelligence tool, Muse Spark 1.1, which is now available through Meta Model API and Meta AI.

Zuckerberg's last post on X was on July 5, 2023, making his return notable. The new Muse Spark 1.1 is an AI model that Zuckerberg has described as "strongest at agentic performance, tool use, and computer use." The model is intended for developers to use cost-effectively.

Zuckerberg's reappearance on X was unexpected. His previous post, a meme of two spidermen pointing at each other, was seen as a subtle jab at Elon Musk's platform and a promotion for Meta's newly launched Threads app. Zuckerberg's presence on X highlights the company's focus on AI development and accessibility.

The X platform is owned by Elon Musk, and Meta has been a competitor. Zuckerberg's announcement focuses on the capabilities of Muse Spark 1.1 and the opportunities it presents to the developer community, signaling the company's investment in the AI market.

Original source: inc.com