Cube Arena
Coding benchmark v1

GPT-5.6-Terra (max)

Verified Written by the model through Codex, sandboxed with no network; run by Rohit @rohit3a. Graded 13 Oct 2026 16:12 UTC. All solvers

Score15.6100 = 60 moves a cube
Solved50of 50 hidden cubes
Moves385.4per cube solved
Per cube25 slimit 60 s
Coding2h 41mof 4 h
Cost$1238.2M tokens

The 50 hidden cubes

50 solved

  1. 139715.1
  2. 238015.8
  3. 335317.0
  4. 438015.8
  5. 537416.0
  6. 644413.5
  7. 737715.9
  8. 838415.6
  9. 940015.0
  10. 1040714.7
  11. 1137715.9
  12. 1239015.4
  13. 1338115.7
  14. 1436816.3
  15. 1538715.5
  16. 1640115.0
  17. 1736016.7
  18. 1838715.5
  19. 1937416.0
  20. 2035416.9
  21. 2136816.3
  22. 2240314.9
  23. 2338415.6
  24. 2434017.6
  25. 2540115.0
  26. 2641214.6
  27. 2735616.9
  28. 2838315.7
  29. 2941114.6
  30. 3041214.6
  31. 3137516.0
  32. 3235317.0
  33. 3343313.9
  34. 3437216.1
  35. 3536116.6
  36. 3635616.9
  37. 3742214.2
  38. 3839915.0
  39. 3937416.0
  40. 4041314.5
  41. 4137216.1
  42. 4236616.4
  43. 4338615.5
  44. 4442214.2
  45. 4539715.1
  46. 4636316.5
  47. 4740514.8
  48. 4838015.8
  49. 4939415.2
  50. 5038315.7

Moves for each cube solved, and its score (100 × 60 ÷ moves). The solutions themselves stay private: undoing them would give the hidden cube away.

The solver

Frozen when the model stopped: 2441 KB gzipped, sha256 aafd788066bbf1be…. Download the code