- ArbOS Dia went live on Arbitrum One and Nova and updated gas prices to smooth out rate spikes and increase the minimum base rate to 0.02 Gwei.
- This upgrade adds passkey-enabled secp256r1 support and extends custom chain gas tokens to Ethereum’s Fusaka and later specifications.
Arbitrum has released ArbOS Dia upgrade for Arbitrum One and Arbitrum Nova. upgrade target Smoother Layer 2 rates, higher throughput, and modern tools.
Dia changes the way Arbitrum sets Layer 2 base pricing during demand spikes. This replaces one gas target and one tuning window with several higher targets and longer windows. Arbitrum has also increased the default minimum base price from 0.01 Gwei to 0.02 Gwei. As CNF reportedPolygon’s EIP-1559 model similarly adjusts prices upward.
According to the project, higher minimums increase the cost of spam-style bot activity. It also aims to make price fluctuations more stable even when usage increases. Additionally, these price changes aim to make high charges less severe, less frequent, and of shorter duration.
ArbOS Dia upgrade published on Arbitrum
Smoother fees when demand suddenly increases
Foundation for higher throughput
Passkey/biometrics for user onboarding
New interoperable gas token for the Arbitrum chain
Ethereum fusaka upgradeDetails: https://t.co/QLCvXGwtPb pic.twitter.com/Y1MMexowpy
— Arbitrum (@arbitrum) January 8, 2026
Arbitrum also linked pricing curve changes to network economics. Increasing the minimum base price will help balance out the balance. dao As the curve becomes smoother, the profit increases. However, this upgrade does not change Arbitrum’s role as a layer 2 network in conjunction with Ethereum.
Dia prepares your network for more throughput with similar hardware. Update Arbitrum’s state transition function to track gas across resource types. This includes compute, storage access, storage increases, and history increases.
Arbitrum has been rolling out upgrades focused on smoother fees and higher throughput. In a similar development, we covered VeChain users have acquired a new Wanchain bridge that allows them to transfer ETH; $USDTand $USDC To Arbitrum.
ArbOS Dia pricing rules and onboarding updates
Dia adjusts block packing rules to reduce skipped transactions under load. A new per-transaction limit allows the last transaction to be used up to MaxTxGasLimit. It is possible to slightly exceed the previous MaxBlockGasLimit without changing the overall goal.
For app teams, Dia updates support for secp256r1 to match passkey format signatures. Ethereum‘s Planned actions after Fusaka. Developers can build onboarding using passkeys, facial ID or fingerprint prompts, and device-protected keys. This update also supports recovery flows and enterprise authentication layers.
Additionally, Dia increases the flexibility of native gas tokens on custom Arbitrum chains through native token mint/burn. This allows the chain to delegate minting and writing to a trusted bridge provider. Supported standards include LayerZero OFT, xERC20, Native $USDCand native $USDTalso known as USDT0. However, this feature is not available on Arbitrum One.
Dia will also introduce selected Fusaka-era EVM changes to the Arbitrum chain. These include updated secp256r1 semantics, CLZ opcodes, ModExp repricing, and BLS12-381 curve operations. On the node side, support for the eth_config RPC method is added, and related networking and history updates are applied as needed.
This rollout establishes the foundation for smoother fees, passkey onboarding, and broader gas token interoperability on custom chains. At the time of reporting, ARB was trading at: $0.208top 4.28% Last 7 days.