Cardano Leios Testnet Opens for Public Testing as Simulations Point Past 1,000 TPS
Cardano’s Leios consensus protocol has entered a live development phase with the launch of the Musashi Dojo public testnet, which opened to developers and independent node operators in late June. The environment is currently running early stress tests and parameter validations for a protocol redesign aimed at significantly increasing the network’s base-layer throughput.
The testnet does not process real ADA or settle actual value transfers. Its purpose is to allow stake pool operators, developers, and community participants to evaluate node stability, identify configuration limits, and attempt to break the system under simulated demand. Independent teams have already begun deploying their implementations, with Blink Labs confirming it shipped a complete Leios integration and joined the network on its launch day.
According to the latest progress summary from the Leios project team, internal simulations running the updated architecture have demonstrated capacity exceeding 1,000 transactions per second. The figure represents a theoretical ceiling under controlled testnet conditions rather than observed mainnet performance. Input Output, the engineering firm coordinating the upgrade, has previously estimated that the consensus redesign could deliver a five- to twenty-fold increase in throughput compared to the current base layer.
The architecture achieves this by introducing a secondary block type that operates alongside Cardano’s existing Praos blocks. By separating consensus and transaction propagation roles, the design aims to reduce bottlenecks without replacing the underlying proof-of-stake security model that has secured the network since its Shelley era.
Charles Hoskinson described the testnet rollout as the result of roughly a decade of research into probabilistic proof-of-stake security guarantees, and the testing process will advance through structured phases before any mainnet decisions are considered.
A full mainnet activation timeline has not been finalized in the available project documentation. Deployment will depend on the testnet holding up under sustained public stress, clearing independent security reviews, and passing Cardano’s on-chain governance process. The project has indicated that initial parameters will be set conservatively if the upgrade proceeds, with throughput adjustments introduced gradually to allow developers and infrastructure providers time to adapt.
For now, the network remains in the validation phase. The available data shows that the consensus design can process higher transaction volumes in simulation, but validator adoption metrics, long-term stability under real-world conditions, and final governance approval remain pending before the upgrade can move to production.
