Meta just dropped Muse Spark 1.1, its most powerful AI model to date, and opened up public preview access to the Meta Model API for developers in the United States. The move represents Meta’s clearest shot yet across the bow of Anthropic and OpenAI in the increasingly crowded race to dominate AI-powered developer tools.
The model launched on July 9, 2026, and brings a 1 million token context window to the table. In English: it can process and reason over vastly larger chunks of information in a single session, which matters a lot when you’re trying to build AI agents that can actually get things done without losing the plot halfway through a task.
What Muse Spark 1.1 actually does
The headline capabilities center on three areas: agentic workflows, coding, and computer interface control. Think of it as Meta building the plumbing for AI systems that don’t just answer questions but actually take actions, write code, and navigate software the way a human would.
Early API access is going to a curated group of partners. Replit, Cline, and Box are among the first companies getting their hands on the technology, each representing a different slice of the developer and enterprise ecosystem. Replit brings the coding-in-the-browser crowd, Cline targets AI-assisted development workflows, and Box covers enterprise document management.
