Welcome to Cairo

A language for scaling dApps using STARKs

A Turing-complete language making it possible for all blockchain developers to harness the power of STARKs

Cairo 1.0 is the upgraded Rust-inspired version of Cairo, allowing developers to write Starknet smart contracts in a safe and convenient manner.

Turing Complete

Cairo is the first Turing-complete language for creating provable programs for general computation.


Builtins and field elements enable efficient generation of proofs.

Production Ready

Cairo-based systems are already in production on Ethereum mainnet

Hello, Cairo

From Hello, World to the beginning
of non-deterministic programming

How Cairo Works

Understand the building
blocks of Cairo

New Stuff

Open Sourcing Cairo 1.0!

Cairo 1.0 is open source! This is only the first step towards open-sourcing the StarkNet stack.




Translates Cairo code into bytecode

Virtual Machine

Runs the Cairo program and turns it into a trace

IDE Extensions

Syntax highlighting for Vim and Visual Studio Code


Visual rendering of the program run

Application Code

StarkEx 2.0 code – same code that powers DeversiFi on mainnnet