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 06:49 UTC. All solvers

Score19.1100 = 60 moves a cube
Solved50of 50 hidden cubes
Moves317.3per cube solved
Per cube12 slimit 60 s
Coding2h 31mof 4 h
Cost$1446.6M tokens

The 50 hidden cubes

50 solved

  1. 137116.2
  2. 234717.3
  3. 337416.0
  4. 426622.6
  5. 529720.2
  6. 639015.4
  7. 732218.6
  8. 829720.2
  9. 928521.1
  10. 1030119.9
  11. 1127721.7
  12. 1229420.4
  13. 1335716.8
  14. 1425823.3
  15. 1530919.4
  16. 1641214.6
  17. 1732418.5
  18. 1826822.4
  19. 1931519.0
  20. 2030919.4
  21. 2139615.2
  22. 2230219.9
  23. 2333517.9
  24. 2429920.1
  25. 2530419.7
  26. 2632218.6
  27. 2732218.6
  28. 2830319.8
  29. 2929620.3
  30. 3029420.4
  31. 3130119.9
  32. 3230719.5
  33. 3329520.3
  34. 3434117.6
  35. 3530519.7
  36. 3631419.1
  37. 3731918.8
  38. 3827521.8
  39. 3931918.8
  40. 4043413.8
  41. 4131419.1
  42. 4227721.7
  43. 4332318.6
  44. 4428121.4
  45. 4533418.0
  46. 4635217.0
  47. 4730619.6
  48. 4830919.4
  49. 4931519.0
  50. 5029720.2

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: 22 KB gzipped, sha256 128d0065f7ddfe03…. Download the code