Muse buys a watermelon: Inside Zuckerberg’s AI tease

On Monday morning, Meta CEO Mark Zuckerberg posted a photo of a Safeway grocery bag containing a single watermelon to his social media account, along with the caption: "Muse ordered me? How thoughtful!" At first glance, the post appeared to be a casual update about Zuckerberg's personal life. However, tech experts quickly realized the message was a strategic product teaser for Meta's upcoming AI ecosystem.

The image cleverly showcased Meta's progress in creating autonomous AI agents, which can perform complex, real-world tasks beyond simple conversational exchanges. In the post, Zuckerberg highlighted Muse, Meta's consumer-facing AI assistant, which officially launched in early September 2026. By stating that Muse ordered the grocery delivery, Meta demonstrated Muse's ability to move beyond basic chatbot functions and execute multi-step tasks in the physical world.

The choice of fruit in the delivery bag was not arbitrary. Watermelon is widely believed to be the internal codename for Meta's next-generation foundational AI model. This model is intended to be a significant upgrade over Meta's current generation of AI models, such as Muse Spark. However, some questions remain regarding the integration of the upcoming Watermelon model into Muse.

While the post seemingly combines the two concepts, it is unclear whether Watermelon is already powering Muse or if the watermelon is merely a symbolic representation of the upcoming release. Meta's stock price rose by 4% in the midday trading session.