models /

gpt-5.5 scaffold-assembly-v1

Provider: openai · Run at 2026-05-01 · Submission 2f4a9e99

CaSS 35.0%
CBS 15.0% v1: 0 by design
Coverage 55%
Cost $5.80
Tokens (in/out) 1.69M / 157.0k

Tier breakdown

The 3-dimension diagnostic matrix for this baseline. CBS can read 0 while the conservative v1 validator has low definitive coverage — that's expected for v1.

Tier BOM pass Scope pass Buildability CaSS CBS Coverage n
trivial 100.0% 75.0% 50.0% 75.0% 25.0% 100% 4
easy 100.0% 50.0% 50.0% 50.0% 50.0% 100% 4
medium 100.0% 50.0% 0.0% 50.0% 0.0% 75% 4
hard 75.0% 0.0% 0.0% 0.0% 0% 4
stretch 25.0% 0.0% 0.0% 0.0% 0% 4

Per-task results

All 20 tasks attempted by this baseline. Click a task to see the same row from every model's perspective.

# Slug Tier CaSS BOM Scope Build Ref sim Iter Tokens Duration Status 3D
0001 flat-plate-5x7 trivial 0 1 0 1 0.000 9 70.5k 5m07s 3D
0002 flat-plate-5x5 trivial 1 1 1 1 0.000 4 21.5k 1m48s pass 3D
0003 staggered-column-2x2 trivial 1 1 1 0 0.000 5 22.3k 1m08s pass 3D
0004 hollow-frame-8x8 trivial 1 1 1 0 0.000 7 34.0k 2m27s pass 3D
0005 small-table easy 1 1 1 1 0.000 3 18.4k 38.3s pass 3D
0006 step-pyramid easy 1 1 1 1 0.400 5 17.3k 43.4s pass 3D
0007 simple-gate easy 0 1 0 0 0.000 3 24.4k 44.6s 3D
0008 picture-frame easy 0 1 0 0 0.294 4 60.6k 3m13s 3D
0009 minifig-chair medium 1 1 1 0 0.000 3 27.8k 57.5s pass 3D
0010 bookshelf-3-shelf medium 0 1 0 0 0.000 7 59.5k 2m29s 3D
0011 simple-bridge medium 0 1 0 incon. 0.250 4 24.3k 1m10s 3D
0012 square-lantern medium 1 1 1 0 0.500 5 101.9k 3m40s pass 3D
0013 farm-tractor hard 0 0 0 incon. 0.000 4 9.5k 17m43s DNC
0014 rolling-cart hard 0 1 0 incon. 0.000 10 103.5k 4m18s 3D
0015 drawbridge hard 0 1 0 incon. 0.000 7 70.0k 2m54s 3D
0016 slatted-bench hard 0 1 0 incon. 0.000 9 143.3k 5m49s 3D
0017 small-house stretch 0 0 0 incon. 0.000 10 152.5k 5m34s DNC
0018 small-lighthouse stretch 0 1 0 incon. 0.000 12 155.4k 5m40s 3D
0019 garden-shed stretch 0 0 0 incon. 0.000 10 174.9k 5m54s DNC
0020 fountain-with-pool stretch 0 0 0 incon. 0.000 10 558.3k 5m14s DNC

Submitted BOMs

The final BOM the model emitted on each task it attempted.

#0001 flat-plate-5x7 trivial CaSS 0

5x7 white bonded flat surface
part_num color_id qty
3020 15 4
3021 15 4
3710 15 2
3623 15 2
total pieces 12

#0002 flat-plate-5x5 trivial CaSS 1

5x5 red bonded plate
part_num color_id qty
3031 4 2
3710 4 4
3024 4 2
total pieces 8

#0003 staggered-column-2x2 trivial CaSS 1

Red staggered 2x2 column 13 bricks tall
part_num color_id qty
3004 4 26
total pieces 26

#0004 hollow-frame-8x8 trivial CaSS 1

8x8 hollow red frame
part_num color_id qty
3460 4 2
3666 4 2
3023 4 4
total pieces 8

#0005 small-table easy CaSS 1

Minifigure Clearance Table
part_num color_id qty
3031 19 1
3005 70 12
total pieces 13

#0006 step-pyramid easy CaSS 1

Tan Step Pyramid
part_num color_id qty
3958 19 1
3031 19 1
3022 19 1
total pieces 3

#0007 simple-gate easy CaSS 0

Red 4-stud-gap gate
part_num color_id qty
3005 4 10
3009 4 1
total pieces 11

#0008 picture-frame easy CaSS 0

Small Standing Picture Frame
part_num color_id qty
3032 15 1
3009 70 4
3034 70 3
3020 70 2
total pieces 10

#0009 minifig-chair medium CaSS 1

Minifigure Chair
part_num color_id qty
3005 70 8
3021 70 1
3004 70 1
total pieces 10

#0010 bookshelf-3-shelf medium CaSS 0

Brown Bookshelf
part_num color_id qty
3032 6 3
3010 6 18
total pieces 21

#0011 simple-bridge medium CaSS 0

Small Footbridge
part_num color_id qty
3003 71 8
3029 70 1
3633 72 6
total pieces 15

#0012 square-lantern medium CaSS 1

4x4 Dark Grey Lantern
part_num color_id qty
3031 72 2
3010 72 6
3004 72 6
3005 72 8
total pieces 22

#0013 farm-tractor DNC

timeout after 300000ms

#0014 rolling-cart hard CaSS 0

Small Rolling Open Cart
part_num color_id qty
3032 4 1
3009 4 2
3004 4 2
4085a 0 1
21445 71 4
30027a 15 4
30028 0 4
total pieces 18

#0015 drawbridge hard CaSS 0

Small Castle Drawbridge
part_num color_id qty
3035 72 1
3003 71 10
2429 72 1
2430 70 1
3032 70 1
total pieces 14

#0016 slatted-bench hard CaSS 0

Slatted Park Bench
part_num color_id qty
60479 70 4
60479 308 4
3032 72 2
3010 0 8
3040a 0 2
3665 0 2
total pieces 22

#0017 small-house DNC

timeout after 300000ms

#0018 small-lighthouse stretch CaSS 0

Small Lighthouse
part_num color_id qty
3958 71 3
92947 4 6
92947 15 6
3633 0 4
4864a 47 4
3062a 14 1
3031 0 1
3942a 4 1
total pieces 26

#0019 garden-shed DNC

timeout after 300000ms

#0020 fountain-with-pool DNC

timeout after 300000ms

Run metadata

Submission ID2f4a9e99-859e-471b-ae92-c94a50dbb99b
Protocolscaffold-assembly-v1
Protocol hashsha256:394f2d859fafd42d0ac144c5f251e68ea2e7f4c06da48bf733e1c2505055ee9c
Run at2026-05-01T14:21:05.149Z
Total duration77m11s
Adapter healthok