ArbOS Dia: Smoother Fees, Higher Throughput

Arbitrum's Dia upgrade represents a quiet but meaningful shift in how the network handles fees, throughput, authentication, and long-term Ethereum alignment. Rather than introducing flashy new features, Dia focuses on smoothing the lived experience of users, operators, and builders-reducing volatility, modernizing onboarding, and preparing the chain for the next generation of Ethereum-aligned execution changes

Key Ideas

Smoother, More Predictable Gas Behavior - Dia updates Arbitrum One's pricing model to reduce the severity and duration of fee spikes during high demand.
Foundations for Higher Throughput - Dia introduces deeper instrumentation of resource usage -tracking computation, storage access, storage growth, and history growth separately. This lays the groundwork for dynamic, constraint-based pricing, enabling future upgrades to safely push toward much higher throughput.
Modern Authentication - Dia aligns Arbitrum with Ethereum's upcoming Fusaka-era authentication standards, making passkeys, biometrics, device-secured keys, and enterprise identity flows first-class citizens.

Why It Matters?

Dia positions Arbitrum for a future where scaling isn't just about raw throughput - it's about predictability, developer familiarity and seamless onboarding. By smoothing fees, preparing for dynamic pricing, modernizing authentication and staying tightly aligned with Ethereum's roadmap, Arbitrum strengthens its role as a high-performance, Ethereum-equivalent execution environment.