Muse Spark 1.3 (xhigh, standard tier) takes 2–3x longer than Claude to finish the same small task

A user reported that Muse Spark 1.3 (xhigh, standard tier) takes significantly longer to complete a small task compared to Claude Code, Opus xhigh. Specifically, Muse Spark 1.3 required 10-15 minutes across two runs, while Claude finished in 5-7 minutes for the same task. This observation contradicts Meta's launch notes for Muse Spark 1.3, which claimed 20% fewer tool calls than version 1.2, as it appears to be doing more work than Claude on small tasks.

This report offers a direct, user-observed comparison of end-to-end task completion times between Muse Spark 1.3 and Claude Code, unlike official benchmarks.