Artificial Analysis Ranks Muse Spark 1.3 on Coding Index

Artificial Analysis posted that Meta's Muse Spark 1.3 (max) scores 68 on the Artificial Analysis Coding Agent Index in the Muse Code harness. The post places it second behind only Claude Opus 5 (xhigh). The variant available now, Muse Spark 1.3 (xhigh), scores 64 and costs the least per task of any agent above it. The account describes itself as an AI benchmarking company offering independent model evaluations and leaderboards. The tweet includes one attached bar chart.