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May 21, 2026
Coin comparison

Arbitrum vs Optimism

Side-by-side comparison of price, market capitalisation, supply, and performance for Arbitrum (ARB) and Optimism (OP). Data refreshed daily from multiple public APIs.

Metric ARB OP
Price $0.1162 $0.1261
Market cap $714.60M $271.31M
24h volume $43.78M $42.66M
Circulating supply 10.00B 4.29B
Max supply 10.00B 4.29B
All-time high $2.40 $4.87
24h change % -1.73% -3.63%
7d change % -18.45% -19.75%
Rank #89 #161

"Winner" is highlighted by raw value; for change percentages, higher is better. This comparison is informational, not investment guidance.

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