MonoMove could reshape Aptos execution, with internal tests showing smart contracts running up to 55 times faster.
Blockchain firm Aptos Labs has introduced MonoMove to improve smart contract performance on the Aptos blockchain. According to the company, internal tests showed execution speeds up to 55 times faster than the network’s current system. Aptos expects development to reach feature completion by late 2026, with a mainnet rollout planned for 2027.
MonoMove Targets Faster Smart Contract Execution
According to an X post, Aptos said MonoMove is the largest scalability upgrade proposed in the network’s history. The new execution engine upgrade is intended to support faster smart contract processing as more financial activity moves on-chain.
Introducing MonoMove, Aptos’ new execution engine and the biggest scalability upgrade in network history.
Moving global markets onchain takes a new standard of speed and safety. MonoMove delivers both, executing the smart contracts behind every onchain market up to 55x faster.… pic.twitter.com/qeAdL73Zfx
— Aptos (@Aptos) October 6, 2026
Smart contracts are blockchain-based programs that automatically carry out actions once predefined conditions are met. Depending on the application, they can process payments, match trades or move collateral without requiring each action to be handled manually.
As more financial activity moves onchain, execution speed can affect how quickly applications process transactions and respond to changing market conditions. Aptos Labs claims MonoMove addresses that requirement by increasing the rate at which smart contract code can run.
During internal testing, MonoMove executed smart contracts up to 55 times faster than Aptos’ existing engine, according to the company. However, those figures reflect internal testing rather than independent benchmarks or performance recorded on the Aptos mainnet.
Aptos Adds Runtime Checks and Differential Testing
Beyond speed, Aptos Labs is also focusing on maintaining the asset protections built into the Move programming language. MonoMove retains Move’s rules governing how digital assets are created, copied, and transferred while introducing additional runtime checks.
According to the post, those checks are designed to catch potential errors in the verifier or virtual machine before they affect transaction execution. As a result, the company expects the architecture to reduce exposure to certain classes of software bugs.
Testing will remain a key part of development before MonoMove reaches production. Aptos Labs is currently using differential testing, which runs identical workloads through both MonoMove and the existing execution engine.
Developers can then compare the results from both engines to identify discrepancies before the new system reaches mainnet. Aptos also plans to conduct formal verification of critical components as MonoMove approaches production readiness.
MonoMove Mainnet Rollout Planned for 2027
Although development is progressing, MonoMove is not yet running on the Aptos mainnet. Aptos Labs expects feature completeness by the end of 2026 before moving toward a proposed 2027 release.
Even after development is completed, mainnet activation will remain subject to an Aptos governance vote. Therefore, the proposed timeline could still change before the engine becomes part of the network.
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