Mark Zuckerberg returns to X after 3 years to unveil Muse Spark 1.1, Meta's agentic AI model

Mark Zuckerberg Just Returned to Elon Musk's X After 3 Years -- Here's Why He Came Back

After three years, Mark Zuckerberg has returned to X to announce the release of a new artificial intelligence tool. Called Muse Spark 1.1, the agentic and coding model is available through Meta's Model API and Meta AI. Zuckerberg, the company's CEO, has touted the new development as being "strongest at agentic performance, tool use, and computer use." "The Meta Model API allows developers to build using Muse Spark for the first time. Our focus is on delivering strong agentic and multimodal models at very low cost. More to come soon," he said. Zuckerberg's return to the Elon Musk-owned platform was abrupt and unforeseen. The tech giant's last post on X, which was made on July 5, 2023, was a meme of two spidermen pointing at each other.

Mark Zuckerberg's Muse Spark post on X triggers debate, draws Elon Musk in

Meta CEO Mark Zuckerberg returned to X after three years to announce Muse Spark 1.1. This AI model is designed for coding, reasoning, and agentic tasks. The announcement generated significant public discussion about the platform choice. Elon Musk commented that X is a great platform for direct CEO announcements. Users debated X's effectiveness for reaching the tech community compared to Threads. On Thursday, Meta CEO Mark Zuckerberg returned to X for the first time in nearly three years to unveil Muse Spark 1.1, the company's latest AI model for coding, reasoning, and agentic tasks. While the announcement quickly surpassed 12 million views, much of the conversation shifted from the launch itself to the platform on which it was made. Users questioned why the announcement was made on Elon Musk-owned X instead of Meta's own social platform

Mark Zuckerberg Posted on Elon Musk's X for the First Time Since 2023 to Promote Meta's Muse AI -- MKBHD Exp

Mark Zuckerberg Returns To X Zuckerberg broke his long silence on X to introduce Muse Spark 1.1, Meta's newest artificial intelligence model designed for agentic AI tasks. In his post, Zuckerberg said Muse Spark 1.1 delivers improved coding, tool use, computer-use capabilities and multimodal reasoning. Meta described the model as the first major release from its Meta Superintelligence Labs, calling it a significant upgrade over the original Muse Spark. According to the company, the AI is built to coordinate multiple AI agents working in parallel, manage long-running tasks, retain context across extended sessions and determine when to automate workflows or interact directly with computer interfaces. The release follows this week's launch of Muse Image. Elon Musk And X Executive React To Zuckerberg's Return Zuckerberg's post quickly drew playful responses from rivals. Nikita Bier, a product executive at Elon Musk's X, replied, "Hello Mark, would you like me to enable Creator Monetization on your account," joking about Zuckerberg's years-long absence from the platform. Musk also chimed in with a brief "Jinx," likely a nod to the Wednesday announcement about xAI's Grok 4.5 model, which also focuses on coding, research and complex work tasks. MKBHD Flags Instagram's New Muse AI Feature Meanwhile, popular tech YouTuber Marques Brownlee, better known as MKBHD, highlighted a Meta AI feature rolling out on Instagram. "Instagram decided to roll out a new 'Muse AI' feature... Then they opted in EVERYONE with a public account," he wrote on X. Brownlee also shared instructions for opting out by opening the Instagram profile page, tapping the three-line menu, navigating to "Sharing and reuse" and turning off the settings for both Posts and Reels. Price Action: Meta shares closed Thursday up 4.70% at $631.48 and gained another 1.25% to $639.36 in after-hours trading, according to Benzinga Pro. According to Benzinga Edge Stock Rankings, Meta ranks in the 88th percentile for Growth, although the stock has lagged over the medium and long term while showing short-term strength. Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors. Photo courtesy: Shutterstock Market News and Data brought to you by Benzinga APIs To add Benzinga News as your preferred source on Google, click here.