museIMAGE
Muse Spark 1.3 tops browser agent benchmark
Stagehand tested browser agents with the Mastra harness and says Meta's Muse Spark 1.3 beats Opus 5 on cost, speed and accuracy.
Stagehand
@StagehanddevArchived 2026.09.16Originally posted 2026.09.16
Stagehand @StagehanddevOriginally posted 2026.09.16
Muse Spark 1.3 from @Meta tops the charts in our Browser Agent benchmarks using the @mastra agent harness. In this harness, Muse outperforms Opus 5 in cost, speed, and accuracy.
x.com/stagehanddev/status/2099949574832165209Archived 2026.09.16 10:16