Aptos Unveils MonoMove With Up to 55x Faster Execution in Tests

Key Notes

• MonoMove replayed Decibel transactions up to 55x faster for collateral withdrawals and up to 22x faster for order placement.
• Separate internal simulations showed up to 11x higher end-to-end throughput, with storage becoming the next bottleneck.
• Aptos Labs targets feature completion by the end of 2026 and a 2027 mainnet rollout that requires governance approval.

Aptos Labs has introduced MonoMove, a new execution engine that it says can run selected smart-contract operations up to 55x faster than the current virtual machine. The strongest result came from replaying collateral withdrawals on Decibel, an onchain trading platform, rather than measuring a 55x improvement across the entire network.

Aptos announced the engine on October 6, describing it as the network’s biggest scalability upgrade. Development is still under way: Aptos Labs targets feature completion by the end of 2026 and a mainnet rollout in 2027, subject to a governance vote.

The project is aimed at the repeated contract calls behind financial applications, including order books, collateral checks, price feeds and payments. Making those operations cheaper to execute computationally could allow the network to process more complex activity, although the announcement does not establish new transaction fees or a live mainnet capacity figure.

What the 55x Benchmark Actually Measures

In its benchmark breakdown, Aptos said it replayed real Decibel mainnet transactions against MonoMove and the current Move virtual machine. Collateral withdrawals executed up to 55x faster, vault requests up to 40x faster, perpetual-market requests up to 38x faster and order placement up to 22x faster.

Using transactions from an operating application gives the comparison a concrete workload. It also sets the limits of the result: these are execution gains for particular transaction types, reported by the team developing the engine. They do not mean every transfer, trade or application on Aptos will receive the same speed increase.

Execution is only one part of completing a blockchain transaction. A validator also needs to access and update state, while the network must agree on which transactions are committed. A much faster contract interpreter can therefore produce a smaller improvement in total throughput once other parts of the system become the limiting factor.

Separate Tests Show Up to 11x Higher Throughput

Aptos reported a separate result from internal simulations involving complex financial workloads, including order-book trading, lending and payments. Those tests showed up to 11x higher end-to-end throughput compared with the current virtual machine.

The team said those measurements did not yet include additional optimizations or Block-STM in the test setup. That distinction matters because Aptos already uses Block-STM as part of its existing execution architecture; the statement concerns the new engine’s integration benchmarks.

Aptos’s execution documentation describes Block-STM as a system that processes transactions in parallel while preserving their agreed order. It detects conflicts between transactions and re-executes work where necessary, so validators reach a consistent result.

MonoMove addresses the work performed inside the virtual machine and the surrounding execution stack. Aptos said its tests shifted the bottleneck from execution to storage, indicating that further gains will also depend on how quickly the system can read and write the state used by applications.

Reducing Work Inside the Move Engine

Public Aptos Labs design notes describe changes to how MonoMove handles function calls and memory. The engine uses fixed offsets calculated during compilation for parts of this work, reducing repeated runtime lookups. Its memory layout is also designed to improve locality, helping the processor access related data efficiently.

The practical objective is to reduce overhead each time a contract performs an operation. For an order book or lending application that repeatedly updates orders, checks balances or handles collateral, small savings in the engine can accumulate across a demanding workload.

The focus follows Aptos’s broader investment in application infrastructure. CoinScreamer previously covered its agent infrastructure initiative, which included Decibel among the ecosystem’s financial applications. MonoMove’s announced benchmarks now use that trading platform’s transactions to test execution improvements.

Faster Execution Must Preserve the Same Results

Aptos said MonoMove retains Move’s rules governing how assets are created, copied and transferred, while adding redundant runtime checks intended to catch errors in the verifier or virtual-machine implementation.

The team is using differential testing to run the same workloads through the current and new engines and compare their results. Discrepancies can reveal bugs before deployment. Aptos also said formal verification of critical components is planned; it did not describe that work as already complete.

For a blockchain, speed cannot come at the cost of validators interpreting the same transaction differently. The new engine has to preserve transaction outcomes and asset-handling rules while changing how efficiently it performs the underlying computation.

Governance Separates Development From Deployment

The announced roadmap sets two separate milestones: feature completeness by late 2026 and mainnet deployment in 2027. The latter remains conditional on governance approval, so completing the code will not by itself activate the upgrade.

Aptos’s governance process covers core-code changes and framework upgrades through proposals and onchain voting. The MonoMove announcement does not provide a voting date or a confirmed activation date. For now, the reported gains are development benchmarks ahead of further integration, testing and community approval.

Disclaimer: CoinScreamer is an independent media brand owned and operated by NuvexMedia LLC, publishing news, research, and market insights on digital assets and related technologies. NuvexMedia LLC invests in and collaborates with companies across the digital asset, blockchain, and technology sectors. These relationships do not influence CoinScreamer’s editorial coverage, and the publication maintains full editorial independence to provide accurate, timely, and objective information. © 2025 NuvexMedia LLC. All rights reserved. This content is for informational purposes only and should not be considered legal, tax, investment, financial, or other professional advice.

News, Technology & Security