Arbitrum One vs Optimism Superchain Fee Mechanics After Pectra

Arbitrum One collected nearly $800,000 in transaction fees over the last day, a figure that surpassed Bitcoin’s daily total of $600,000. This single-day spike contrasts with the 7-day average, where Arbitrum’s $387,000 remains below Bitcoin’s $630,000. The network has crossed the 200 million transaction milestone and maintains over 4 million active users. These metrics confirm that user activity on this Ethereum Layer 2 continues to outpace the legacy L1 chain despite the compressed altcoin market.

Pricing Stability Through Dia

The ArbOS Dia upgrade, released on January 8, 2026, fundamentally changed how Arbitrum One calculates base fees. Instead of relying on a single target and adjustment window, the system now uses six distinct target-window pairs to determine the final gas price. Short windows handle immediate demand bursts with small increments, while long windows anchor the network’s long-term capacity constraints. This multi-dimensional approach acts like shock absorbers, dampening peak-to-trough volatility that previously caused "jumpy" fee spikes during congestion. I find this stability essential for DeFi protocols, as it reduces the risk of underpriced submissions failing on the first try. The upgrade also raised the minimum L2 base fee from 0.01 gwei to 0.02 gwei, a change that makes spam-style usage less cheap and supports economic sustainability. By tracking real resources such as CPU time, memory pressure, and disk reads, the State Transition Function now identifies specific bottlenecks rather than treating all gas as a single commodity. This precision allows the network to scale execution capacity without constant repricing debates.

Superchain Economics And TVL Gaps

Optimism’s OP Stack ecosystem drives revenue through sequencer fees that flow back to the Optimism Collective treasury via retroactive public goods funding. Chains like Coinbase’s Base, Mode Network, and Zora contribute to this shared infrastructure model. However, the liquidity gap between the two ecosystems is stark. Arbitrum holds approximately $3.85 billion in Total Value Locked, which is almost six times Optimism’s $338.99 million. While Optimism’s smaller TVL includes a higher share of native liquidity that tends to stay longer, Arbitrum’s depth attracts major trading volumes and stablecoin pools. Transaction costs on both networks dropped by roughly 90% following the EIP-4844 upgrade, making swaps on Arbitrum cost around $0.28 compared to Bitcoin’s $2.05 average. The Glamsterdam upgrade will further reduce the cost of posting calldata to Ethereum mainnet, directly benefiting Arbitrum’s economic model. ARB trades near $0.22, a price that reflects market compression rather than the network’s actual activity metrics. Does the lower per-transaction cost on Arbitrum justify the significantly higher capital concentration compared to the more distributed Optimism Superchain?