Cardano's Top Brass Exude Optimism About Ouroboros Leios Debut in 2024

IOG Director of Software Architecture Nicolas Biri has expressed strong confidence that Cardano’s Ouroboros Leios upgrade will be successfully delivered this year.

His comments underscore increasing belief within the Cardano ecosystem that Leios can significantly boost throughput while preserving decentralization and security.

Key Points

IOG Director of Software Architecture Nicolas Biri expressed strong confidence that Cardano’s Ouroboros Leios upgrade will launch successfully in 2026.

Biri emphasized that development is progressing steadily, reflecting growing confidence in the project’s successful delivery.

Cardano founder Charles Hoskinson expects Leios to become operational before the end of the year.

According to IOG, Ouroboros Leios could deliver a 10x to 65x increase in network throughput and potentially support over 1,000 TPS.

IOG Director Expresses Confidence in Leios Launch

In a recent statement, Nicolas Biri expressed confidence in Cardano’s Ouroboros Leios scaling initiative. He praised the engineering efforts led by Sebastian Nagel and his development team, highlighting the substantial progress made so far.

His remarks followed Charles Hoskinson’s projection that the Cardano community could have Leios in place by the end of the year. According to Hoskinson, the upgrade could position Cardano as the first third-generation blockchain to fully address the blockchain trilemma by achieving meaningful scalability without sacrificing decentralization or security.

JUST IN: #Cardano $ADA Founder Charles Hoskinson says "end of the year we have Leios, and we were the last of the third generations to truly scale. We solved the blockchain trilemma." pic.twitter.com/2KdsXqBlKH

— Angry Crypto Show (@angrycryptoshow) May 29, 2026

In response to Hoskinson’s comments, Biri stated that Nagel’s team is conducting the intensive engineering work required to bring Leios to life. He noted that development is progressing well and reiterated his confidence that the upgrade will be successfully delivered, potentially before the end of the year.

Leios Progress

Ouroboros Leios is expected to become a cornerstone of Cardano’s long-term scaling strategy. The protocol aims to increase network throughput and improve transaction-processing efficiency through advanced parallelization techniques.

Notably, Charles Hoskinson has repeatedly indicated that Leios could launch this year. He has also proposed a 24/7 development approach to accelerate its delivery.

More recently, IOG confirmed that the project is approaching a critical milestone. Last month, the company announced that the highly anticipated Leios testnet is scheduled to launch in June 2026.

Why Leios Matters

According to IOG, the upcoming testnet marks the transition of Ouroboros Leios from years of academic research and extensive simulations into real-world deployment. The company also stated that the protocol is designed to deliver a 10x to 65x increase in throughput, potentially enabling Cardano to process more than 1,000 transactions per second (TPS).

Although the Leios testnet is expected to launch in June, the timeline for a full mainnet deployment remains unclear. Nevertheless, recent comments from both Hoskinson and Biri suggest that development is advancing steadily.