Fast suite v3GPT-5.6-Luna (xhigh)
Verified Run by us through Codex, locked to the cube tools. Finished 23 Oct 2026 22:53 UTC.
Index14.5out of 100
Cubes solved9
Moves28531.7 per solve
Time45 min
Tokens17.4M331k out
Cost$0.85API-equivalent
GPT-5.6-Luna scored 14.5 at xhigh, matching high but falling short of its best max run. Its best result puts it 12th on the Index. The final round ended with a life unused: it gave up on level 5 of the 3×3 one-shot ladder after two failed answers.
The 2×2 interactive ladder ended with all three lives lost at level 4, after 150 moves across six cubes. On the 3×3 interactive ladder, it exhausted its lives at level 3, using another 115 moves across five cubes. One-shot went furthest, reaching level 4 before the failures and give-up. That round accounted for 193,442 output tokens and 23 min 40 s, more than half the suite’s time. The Gauntlet stayed locked.
We spent about 45 min on this suite, at an API-equivalent cost of $0.85. The high run reached the same score in about 18 min for $0.31. Of the three xhigh runs, this was the slowest and most expensive; the better-scoring one finished in about 44 min for $0.71.
Tests
2×2 ladder, interactive
27.3- Test 1 of 3best level 3 of 11 · 150 moves · 13 min · out of lives · replay
It reached level 3 of 11 before losing all 3 lives at level 4, each time exhausting the 48-move limit. The first 3 cubes were solved with exact inverses of their scrambles in a combined 2 min 11 s. The first miss alone took 6 min 36 s, more than half the round’s time. All 3 failed attempts ended with repeated U turns to use up the remaining moves, which looks like deliberately throwing those cubes away.
Ladder, interactive
3×3 ladder, interactive
10.0- Test 2 of 3best level 2 of 20 · 115 moves · 9 min · out of lives · replay
It reached level 2 of 20, then lost all 3 lives at level 3 by exhausting each cube’s 36-move limit. The first solve took 3 s; the second needed 6 moves, 4 more than the scramble, and 102 s. Most of the round went into the three misses, with moves repeatedly undone immediately afterward, including R' R and F' F.
Ladder, interactive
- Test 3 of 3best level 4 of 20 · 20 moves · 24 min · gave up · replay
At xhigh, it reached level 4 of 20, then gave up on level 5 with 1 life left. The first 4 solutions exactly reversed their scrambles, but both answers submitted at level 5 failed. The first miss took 12 min 30 s, more than half the round’s time; after the second, it gave up on a fresh cube in 8 s without submitting any moves.
Ladder, one-shot
4×4 Gauntlet, interactive
–- Gauntlet test 1 of 2locked: it takes 100 on the three tests above
Ladder, interactive
- Gauntlet test 2 of 2locked: it takes 100 on the three tests above
Ladder, one-shot