CLAUDE-OPUS-5 · 20260725-opus5-bash-probe

A benchmark in which language models design roller coasters that RollerCoaster Tycoon 2 builds, tests, and rates.

claude-opus-5 · 1st of 1 compare all models →

design · steel twister · claude-code · design mode — models build from scratch

excitementintensity×build failed
0515intensity ceiling 10round 1: excitement 7.067.06round 2: excitement 6.96round 1: intensity 10.07round 2: intensity 8.40R1R2
score
7.06
intensity
10.07
nausea
6.14
best round
1
rated rounds
2/2
similarity
0.46
tokens / cost
191 in / 150k out · $5.82
2 round(s)

Round 1 trace (61) →

excitement 7.06 intensity 10.07 nausea 6.14 length 674 drops 12 airtime 50 tested ok similarity 0.46 (nearest: Time Twister)
track program (81 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "left_vertical_loop",
    "down_25_to_flat",
    "left_corkscrew_up",
    "right_corkscrew_down",
    "flat_to_left_bank",
    "left_helix_down_large",
    "left_bank_to_flat",
    "flat_to_up_25",
    "right_vertical_loop",
    "down_25_to_flat",
    "left_corkscrew_up",
    "right_corkscrew_down",
    "flat_to_up_25",
    "left_vertical_loop",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_right_bank",
    "right_helix_up_large",
    "right_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat_to_left_bank",
    "left_helix_up_large",
    "left_bank_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "left_corkscrew_up",
    "right_corkscrew_down",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat",
    "flat",
    "brakes",
    "brakes",
    "brakes",
    "brakes",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat"
  ],
  "ride_type": 51,
  "start": {
    "dir": 0,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-opus-5 round 1

Round 2 trace (64, 2 rejected) →

excitement 6.96 intensity 8.40 nausea 4.70 length 725 drops 13 airtime 67 tested ok similarity 0.39 (nearest: Danglefeet)
track program (96 pieces)
{
  "pieces": [
    "begin_station",
    "middle_station",
    "middle_station",
    "end_station",
    {
      "chain": true,
      "t": "flat_to_up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    {
      "chain": true,
      "t": "up_25"
    },
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25_to_down_60",
    "down_60",
    "down_60",
    "down_60_to_down_25",
    "down_25_to_flat",
    "flat_to_up_25",
    "left_vertical_loop",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "left_corkscrew_up",
    "right_corkscrew_down",
    "flat_to_up_25",
    "left_vertical_loop",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "left_corkscrew_up",
    "right_corkscrew_down",
    "flat_to_up_25",
    "left_vertical_loop",
    "down_25_to_flat",
    "flat_to_left_bank",
    "banked_left_turn_5",
    "left_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "left_corkscrew_up",
    "right_corkscrew_down",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25_to_flat",
    "left_corkscrew_up",
    "right_corkscrew_down",
    "flat_to_right_bank",
    "banked_right_turn_5",
    "right_bank_to_flat",
    "flat_to_up_25",
    "up_25",
    "up_25_to_flat",
    "flat_to_down_25",
    "down_25",
    "down_25",
    "down_25_to_flat",
    "flat_to_down_25",
    "down_25_to_flat",
    "brakes",
    "right_turn_5",
    "brakes",
    "brakes",
    "brakes",
    "right_turn_5"
  ],
  "ride_type": 51,
  "start": {
    "dir": 0,
    "x": 60,
    "y": 60
  }
}
park screenshot, claude-opus-5 round 2

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