View the Leios CIP live on GitHub now
Leios development tracker
Track the development journey of Leios behind the scenes, with activity updates and evolving roadmaps.
5.4K commits in the past year
67K lines of code merged in the past 3 months
78 tickets completed
770,374 lines of code so far
Code over time
Total lines for the last 3 months
Roadmap
Ticket status
To do
In progress
Done
Objectives
Q3
2025
Q4
Q1
Q2
Q3
2026
Q4
Q1
73%
85%
26%
93%
89%
0%
14%
5,431 contributions over the last 12 months
| Mon | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wed | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fri | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | ||||||||||||||||||||||||||||||||||||||||||
Leios testnet
Ouroboros Leios is a major step up in Cardano’s throughput, and the Musashi Dojo testnet is where it gets proven. Named after Miyamoto Musashi (武蔵), it honours Cardano’s Japanese community and Musashi’s philosophy.
Run a node, test your tooling, and help shape the upgrade on its way to mainnet.
Join Dojo
Taking open source beyond the repository, the Leios Development Tracker brings new transparency and insight to the development process
Discover Leios_
Leios documentation
Find out about Ouroboros Leios and how it will optimize resource use.
Our latest news_
Leios monthly spotlight: October highlights
November 2025 - Input | Output blog
Read
Leios takes the stage at Crypto 2025
June 27, 2025 - Input | Output blog
Read
Ouroboros Leios: the next leap in scalability
April 24, 2025 - Input | Output blog
Read
Ouroboros Leios: design goals and concepts
November 17, 2022 - Input | Output research
Read