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Mark Zuckerberg recently posted on X for the first time in over three years. The reason mattered more than the post itself, as he announced a new AI model from Meta, Muse Spark 1.1, designed for coding, building software, and running AI agents. Developers can access it via the Meta Model API.
Zuckerberg chose to share this news on X, a platform he had avoided for years. This choice alone has people talking. Meta Model API, the company’s first proprietary API in the US, lets users employ Muse Spark 1.1 within their own apps. These moves together show Meta wants to capture a larger share of the developer market, a space where OpenAI and Anthropic currently lead.
Zuckerberg said the new model can handle complex tasks. It works with third-party tools and holds a large amount of information at once, with a context window of up to 1 million tokens. In plain terms, the model can keep track of several details during a single task. It can also run several AI agents simultaneously.
The model works on desktop, mobile, and browser platforms. Meta said it can write code, spot and fix bugs, automate tasks, and work with text, images, and video. The goal is to help businesses automate workflows with less human effort.
On the pricing side, developers can start with free credits and pay for usage after the credits run out. Reports say the cost is $1.25 per million input tokens and $4.25 per million output tokens. Meta confirmed the model will show up in its own apps too. A new ‘Thinking’ mode is coming soon to the Meta AI app and website.
The launch puts Meta right in the middle of the fight for AI dominance. The company is counting on strong memory and multi-agent skills to pull developers away from bigger rivals. Meta plans to bring Muse Spark 1.1 to WhatsApp, Instagram, Facebook, and its smart glasses down the line, offering it a reach only a few others can match.
While real success will come down to performance rather than the announcement itself. Zuckerberg's surprise return to X has already done its job, for now, putting Meta's AI plans back in the spotlight.
