Conways Game of Life

Penny win✓ Verified run (measured in the hosted demo)Oct 5, 2026

Claude Code 2.1.289claude-opus-5-5Native Penny

Cost−$0.092

−35%

Penny 35% cheaper

Native

$0.261Penny

$0.169

Tokens−54.8k

−40%

Penny 40% fewer tokens

Native

135.7kPenny

80.9k

Model calls+1

+20%

Penny 20% more calls

Native

5Penny

Native

life.html

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Penny

life.html

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Session Details

	Native	Penny
Model	claude-opus-5-5	claude-opus-5-5
Model calls	5	6
Cache read	114.5k	65.3k
Cache write	13.9k	9.3k
Fresh input	1.0k	870
Output	6.3k	5.4k
Total tokens	135.7k	80.9k
Background calls	claude-haiku-4-5-20251001 ×1	claude-haiku-4-5-20251001 ×1
Cost	$0.261	$0.169

Costs are API-equivalent estimates at Standard prices, including the main conversation, subagents and background calls such as titles and the auto-mode reviewer.