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← mecheval. / run / a2-l-bracket-01 / claude-direct-claude-opus-4-7 / 20260428T153537Z-3a65

run 20260428T153537Z-3a65

a2-l-bracket-01 · claude-direct-claude-opus-4-7

Summary

status	PASS
score	1.00 (6/6)
submission	self-run
model	claude-direct-claude-opus-4-7 (anthropic)
started	2026-04-28T15:35:37.045Z
ended	2026-04-28T15:35:42.948Z
tokens	940 in · 594 out · 1,534 total
wallclock	5.9s
tool calls	1
task hash	`c8efa8964b7ad82a…`
vcad hash	`fad69e03ef86941e…`

Prompt

Make an L-shaped mounting bracket. The base lies in the XY plane, occupying x in [0, 50], y in [0, 30], z in [0, 4] (50mm long, 30mm wide, 4mm thick). A vertical wall stands on the +X edge: x in [46, 50], y in [0, 30], z in [4, 30] (4mm thick, 30mm wide, rising to z = 30). Two through-holes of diameter 5mm pierce the base parallel to Z, centered at (10, 15) and (35, 15) on the top face. Output a single solid.

Checks

valid_solid

pass

params + details

params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}

bbox

pass

params + details

params: {
  "type": "bbox",
  "min": [
    0,
    0,
    0
  ],
  "max": [
    50,
    30,
    30
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    50,
    30,
    30
  ],
  "actual_min": [
    0,
    0,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.1
}

mass_props

pass

params + details

params: {
  "type": "mass_props",
  "volume_mm3": 8962.92,
  "tolerance_pct": 0.5
}

details: {
  "volume": {
    "actual_mm3": 8963.927721672726,
    "deviation_pct": 0.011243229580604232,
    "pass": true,
    "spec_mm3": 8962.92,
    "tolerance_pct": 0.5
  }
}

hole_count

pass

params + details

params: {
  "type": "hole_count",
  "diameter_mm": 5,
  "expected": 2,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 2,
  "diameter_mm": 5,
  "diameter_tolerance_mm": 0.05,
  "expected": 2,
  "found": [
    [
      10,
      15,
      5
    ],
    [
      35,
      15,
      5
    ]
  ]
}

hole_positions

pass

params + details

params: {
  "type": "hole_positions",
  "diameter_mm": 5,
  "positions": [
    [
      10,
      15,
      0
    ],
    [
      35,
      15,
      0
    ]
  ],
  "tolerance_mm": 0.1
}

details: {
  "diameter_mm": 5,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        10,
        15
      ],
      "pass": true,
      "spec_xy": [
        10,
        15
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        35,
        15
      ],
      "pass": true,
      "spec_xy": [
        35,
        15
      ]
    }
  ],
  "tolerance_mm": 0.1,
  "unmatched_extras": []
}

step_roundtrip

pass

params + details

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          50,
          30,
          30
        ],
        "original_min": [
          0,
          0,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          50,
          30,
          30
        ],
        "roundtripped_min": [
          0,
          0,
          0
        ],
        "tolerance_mm": 0.06557438524302
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 8963.927721672726,
        "pass": true,
        "roundtripped_mm3": 8963.927721672726
      }
    }
  ],
  "tolerance_pct": 0.1
}

Tool calls

anthropic.messages.create

5861ms

args

{
  "model": "claude-opus-4-7",
  "max_tokens": 8000,
  "system_chars": 1632,
  "user_chars": 470
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260428T153537Z-3a65.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "base", "op": {"type":"Cube","size":{"x":50,"y":30,"z":4}} },
    "2": { "id": 2, "name": "wall_raw", "op": {"type":"Cube","size":{"x":4,"y":30,"z":26}} },
    "3": { "id": 3, "name": "wall", "op": {"type":"Translate","child":2,"offset":{"x":46,"y":0,"z":4}} },
    "4": { "id": 4, "name": "l_shape", "op": {"type":"Union","left":1,"right":3} },
    "5": { "id": 5, "name": "hole1_raw", "op": {"type":"Cylinder","radius":2.5,"height":10,"segments":32} },
    "6": { "id": 6, "name": "hole1", "op": {"type":"Translate","child":5,"offset":{"x":10,"y":15,"z":-3}} },
    "7": { "id": 7, "name": "hole2_raw", "op": {"type":"Cylinder","radius":2.5,"height":10,"segments":32} },
    "8": { "id": 8, "name": "hole2", "op": {"type":"Translate","child":7,"offset":{"x":35,"y":15,"z":-3}} },
    "9": { "id": 9, "name": "drilled_once", "op": {"type":"Difference","left":4,"right":6} },
    "10": { "id": 10, "name": "bracket", "op": {"type":"Difference","left":9,"right":8} }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{ "root": 10, "material": "default" }]
}

drawing mecheval.	sheet RUN · 20260428T153537Z-3a65	scale PASS
date 2026-04-29	drawn by muni	project mecheval

generated 2026-04-29T00:03:43.146Z · static site, regenerate with npm run build -w @mecheval/leaderboard