Low-cost, limitless scaling for Ethereum dapps

Arbitrum rollup is a super-scalable, secure and low-cost L2 solution created by Offchain Labs with an endless palette of options and flexibility for developers.

Scale at a fraction of the cost of Ethereum transactions

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Build secure, scalable apps in minutes

Arbitrum is a Layer 2 scaling solution and optimistic rollup. This ‘optimism’ means that only the minimum possible amount of transaction information is published to the Ethereum mainnet, increasing efficiency while maintaining security.


As an optimistic rollup, anyone can affirm correct Layer 2 results with security rooted in Ethereum.


Arbitrum supports all EVM languages, and natively supports all Ethereum tooling without any special adapters.


High-throughput is made possible by moving dense computation and storage off the Ethereum main network.

About Arbitrum

Arbitrum, created by Offchain Labs, uses optimistic rollup technology to significantly reduce the amount of on-chain activity while resolving a dispute interactively. The off-chain process is quickly narrowed down to a merit-based conclusion, allowing for trustless consensus, high throughput and low gas fees while benefiting from the proven security of Ethereum.

Supported by tools you actually use

Arbitrum supports all arbitrary EVM smart-contracts and your favorite tools from the 
Ethereum ecosystem.

Getting started with Arbitrum + Infura

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Learn more about Infura + Arbitrum

Here are some resources to help you along your way.

Blog: Arbitrum supported by Infura

Read our launch announcement for details on the rollout of Arbitrum on the Infura network.

Infura-Arbitrum tutorials

Look over these tutorials to get you started building on Arbitrum with Infura.

Arbitrum One Portal

Check out the thousands of projects launched using Arbitrum

Start building on Infura + Arbitrum