Meta’s Muse Spark 1.2 scores 54 on the Artificial Analysis Intelligence Index. Its Meta’s third release in four months, significantly improving agentic knowledge work capabilities over prior releases and putting Meta next to SpaceXAI in a tie for third place amongst US labs Muse Spark 1.2 (xhigh) lands at 54, up 3 points from Muse Spark 1.1 (51) and 11 points from Muse Spark 1.0 (43, April). It enters effectively tied with GPT-5.5 (xhigh, 55) and Grok 4.5 (high, 54), narrowly behind the current frontier models Claude Opus 5 (max, 61), Claude Fable 5 (max w/ fallback, 60), GPT-5.6 Sol (max, 59), and Kimi K3 (max, 57). Meta shared access with us ahead of public release for benchmarking.

Full benchmarks : Meta’s Muse Spark 1.2 scores 54 on the Artificial Analysis Intelligence Index, putting Meta next to SpaceXAI in a tie for third place amongst US labs.