Meta just made the AI coding wars a lot more interesting. Muse Spark 1.1, the company’s upgraded multimodal reasoning model, scored 69 on the Artificial Analysis Coding Agent Index using the Opencode harness, putting it within striking distance of GPT-5.5 and outperforming Claude Opus 4.8.
The model launched on July 9, 2026, from Meta Superintelligence Labs. It arrived just three months after the original Muse Spark debuted on April 8, which is the kind of iteration speed that makes competitors nervous.
What Muse Spark 1.1 actually brings to the table
Muse Spark 1.1 is designed specifically for agent-based applications, with a focus on tool use and computer operation. The model ships with a 1 million token context window, allowing it to hold roughly the equivalent of several full codebases in memory at once, which matters enormously when an AI agent needs to understand how different parts of a project connect before making changes.
It also supports delegating tasks to sub-agents, targeting the increasingly popular “agentic” coding paradigm, where AI doesn’t just answer questions but actively performs multi-step development work including bug diagnosis and feature implementation.
