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

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, what it is and how it works.


Code, run and test Cairo, right from your browser, in real time.

New Stuff


Build A Voting System with Cairo

Implement a simple, secure, non-anonymous voting mechanism.


  • Cairo 1.0
    Cairo 1.0 will give developers a safer, simpler, more usable programming language. At the heart of Cairo 1.0 will be Sierra, an intermediary representation layer that promises greater… Read More »Cairo 1.0
  • Cairo Whitepaper
    Cairo – How does it work? How are proofs created? Read the Cairo Whitepaper.



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