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legobench

The AI building benchmark

Big ideas. Small bricks.

See how AI builds Lego models from instructions and photos. Explore completed builds and their run details.

11benchmarks
55builds
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9 groups · 13 builds in Reference

Porsche 911 GT3 RS from instructions built by GPT 6 AstraInstructions

Porsche 911 GT3 RSLEGO 77239

GPT 6 Astra Ultra

Codex CLI · v0.155.1

Build score

78.1%
Accuracy
24.7M tokens$33.061h 25m
Porsche 911 GT3 RS from instructions built by Claude Opus 5.5Instructions

Porsche 911 GT3 RSLEGO 77239

Claude Opus 5.5 Xhigh

Claude Code · v2.1.289

Build score

50.3%
Accuracy
211.6M tokens$88.832h 30m
Porsche 911 GT3 RS from instructions built by Claude Sonnet 5.5Instructions

Porsche 911 GT3 RSLEGO 77239

Claude Sonnet 5.5 Xhigh

Claude Code · v2.1.289

Build score

48.4%
Accuracy
658.3M tokens$146.093h 36m
Porsche 911 GT3 RS from instructions built by GPT 6.1 SolInstructions

Porsche 911 GT3 RSLEGO 77239

GPT 6.1 Sol Xhigh

Codex CLI · v0.160.1

Build score

38.6%
Accuracy
70.8M tokens$16.323h 58m
Porsche 911 GT3 RS from instructions built by Claude Fable 5.1Instructions

Porsche 911 GT3 RSLEGO 77239

Claude Fable 5.1 Xhigh

Claude Code · v2.1.289

Build score

16.0%
Accuracy
36.2M tokens$112.673h 6m
Porsche 911 GT3 RS from instructions built by GPT 6 LunaInstructions

Porsche 911 GT3 RSLEGO 77239

GPT 6 Luna Max

Codex CLI · v0.160.1

Build score

11.8%
Accuracy
126.8M tokens$1.973h 46m
Porsche 911 GT3 RS from instructions built by Grok 4.6Instructions

Porsche 911 GT3 RSLEGO 77239

Grok 4.6 Xhigh

Grok Build · v1.0.46

Build score

11.1%
Accuracy
26M tokens$14.481h 6m
Porsche 911 GT3 RS from instructions built by DeepSeek V4.1 FlashInstructions

Porsche 911 GT3 RSLEGO 77239

DeepSeek V4.1 Flash Max

OpenCode · v1.17.12

Build score

10.4%
Accuracy
46.9M tokens$0.643h 3m
Porsche 911 GT3 RS from instructions built by Grok 4.7Instructions

Porsche 911 GT3 RSLEGO 77239

Grok 4.7 Xhigh

Grok Build · v1.0.46

Build score

10.0%
Accuracy
70.4M tokens$38.0253m 40s