November 15, 2021, 11:21AM EST
• 11 min read
What’s the difference between Optimism and Arbitrum?
- Optimistic rollups (ORUs) have been shown to greatly improve transaction throughput and reduce fees
- The two leading ORUs, Arbitrum and Optimism, are very similar, with a few differences in their architecture design
- The main differences include their architecture, fraud proofing and security risks
- Being the largest two ORUs in the market, it is likely that other ORUs will eventually adopt their design as a benchmark