Nissan Skyline GT-R (R34) from instructions
Build LEGO Speed Champions 76917 Nissan Skyline GT-R (R34) as an LDraw model from the official instruction PDF; scored against the ground-truth model.
Instruction booklet
Open the full instructions PDF ↗
Builds (13)
| Harness · model | Accuracy | Cost | Time Spent |
|---|---|---|---|
| Codex · GPT 6 Luna (Max) | 10.0% | $1.76 | 3h 49m |
| Grok Build · Grok 4.6 (Xhigh) | 12.4% | $10.77 | 58m 23s |
| Codex · GPT 6.1 Sol (Ultra) | 45.6% | - | 2h 36m |
| Codex · GPT 6 Astra (Xhigh) | 85.4% | $11.54 | 29m 52s |
| Claude Code · Claude Haiku 5.5 (Xhigh) | 18.9% | $6.33 | 1h 53m |
| Codex · GPT 6.1 Sol (Xhigh) | 45.6% | $9.85 | 3h 59m |
| Codex · GPT 6 Astra (Ultra) | 84.5% | $20.29 | 1h 5m |
| Claude Code · Claude Haiku 5.5 (Max) | 16.4% | $1.71 | 1h 9m |
| Claude Code · Claude Fable 5.1 (Max) | 19.0% | $89.40 | 2h 48m |
| Claude Code · Claude Opus 5.5 (Xhigh) | 27.9% | $60.49 | 3h 10m |
| Claude Code · Claude Sonnet 5.5 (Xhigh) | 70.2% | $135.43 | 3h 39m |
| Codex · GPT 6.1 Sol (Ultra) | 65.1% | $6.96 | 3h 47m |
| Codex · GPT 6 Astra (Ultra) | 84.9% | $22.19 | 1h 33m |
