Muse Spark 1.3 Ties for First in 105-Real-Bug Benchmark

Using a private benchmark of 105 bugs seeded across two real repositories, developer PawelHuryn found Muse Spark 1.3 (max) tied with Fable 5.1 at the top with 33 points, signaling Meta's arrival at the frontier. His tests also showed the xhigh tier costs 50% more and runs 13% slower while solving only one additional bug.

2026-09-13 ~ 2026-09-13 · 3 related posts

• Muse Spark 1.3 ties Fable 5.1 in 105-bug repo test, Meta joins frontier — PawelHuryn · 2026-09-13
• 105 real bugs tested: Muse Spark 1.3 ties Fable 5.1 at 33 as Meta joins the frontier — PawelHuryn · 2026-09-13
• Muse Spark 1.3 Tested: xhigh Costs 50% More, 13% Slower, Fixes One Extra Bug — PawelHuryn · 2026-09-13