Ethereum, scaled.

Optimism is a low-cost and lightning-fast Ethereum L2 blockchain.

Fast, stable, scalable Ethereum.

Optimism is a fast, stable, and scalable L2 blockchain built by Ethereum developers, for Ethereum developers. Built as a minimal extension to existing Ethereum software, Optimism’s EVM-equivalent architecture scales your Ethereum apps without surprises. If it works on Ethereum, it works on Optimism at a fraction of the cost.

Optimism goes Superchain

The Superchain project seeks to maximize interoperability and composability between different chains using the OP Stack, and integrate siloed L2s into a single, cohesive layer.
OP Stack
The modular code powering Optimism Mainnet and the Superchain.
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The Superchain
Building towards a unified future that doesn’t fracture our ecosystems, our applications, or our ability to work together.
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Built for the public good.

Optimism is more than just a blockchain. It's an experiment in sustainable ecosystem funding fueled by protocol revenue. Retroactive Public Goods Funding is simple: you build for the public good, you get paid. Join us on Discord and help build the future of Ethereum, sustainably.
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Developer resources
Everything you need to get started building on Optimism, all in one place.