Ethereum, scaled.

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

Open source, secure, permissionless, and decentralized.

That’s what a blockchain needs to survive. Very few of them check all these boxes. Ethereum is one of them.

A strong foundation determines the long-term success of any endeavor.
Join a thriving digital metropolis of decentralized applications that’s here to stay...

Explore the ecosystem

Learn more about Optimism

Donated to public goods

The L2 with the best UX and DevX, hands down.

Optimism addresses the practical needs of developers and users. It works great now, and it's only getting better.

Simple and elegant

As few lines of code as possible separate Optimism from Ethereum's battle-tested infrastructure. Build your app on the L2 that doesn't quit.

Click and deploy

Optimism is equivalent with the Ethereum Virtual Machine, not just compatible. This means all Ethereum apps and tooling just work.

A community of builders

Hop in the Discord and get all the technical support you need from the Optimism Support Nerds or find teammates for your next big project.

Join us on Discord

Developer resources

Everything you need to get started building on Optimism, all in one place.

Start building