Sui’s Visa-SWIFT Ambition: Can a Blockchain Really Replace the World’s Payment Rails?

When a blockchain founder says his network can replace Visa, SWIFT and the rest of the traditional payment stack, the claim is easy to dismiss as crypto theater. The industry has heard versions of this promise for more than a decade. Bitcoin was supposed to become peer-to-peer cash. Stablecoins were supposed to make banks obsolete. DeFi was supposed to rebuild Wall Street on-chain. Most of those visions have not disappeared, but they have collided with the brutal reality of regulation, distribution, user experience and trust.

Adeniyi Abiodun, co-founder and chief product officer of Mysten Labs, is now putting Sui into that same arena. His argument is not subtle: Sui can operate the same kind of payment infrastructure that legacy networks provide, but at a fraction of the cost, with greater scale and the privacy needed for mainstream adoption. It is an ambitious claim, and it lands at a moment when stablecoins, AI agents and global payment modernization are converging into one of crypto’s most important battlegrounds.

The question is not whether Sui can process fast transactions on a blockchain. The bigger question is whether it can become a serious payment rail in a world still dominated by banks, card networks, messaging systems, compliance departments and entrenched trust.

Why Sui Is Targeting Payments Now

Sui’s payment narrative is not coming out of nowhere. The network was built by Mysten Labs, a team with roots in Meta’s Libra and Diem projects. That matters because Libra was one of the most serious attempts by a major technology company to build a global digital money network. It failed politically, but it left behind a technical and strategic blueprint: digital money should move like information, but with enough reliability, programmability and compliance compatibility to support mass adoption.

Abiodun has framed Sui as a continuation of that unfinished project. In his own writing, he has described Sui’s endgame as becoming a “global coordination layer” for digital assets, money and identity. In other words, Sui is not merely trying to be another smart contract platform. Its larger pitch is that the internet needs a shared settlement and coordination system where assets can move, applications can interoperate and users can transact without the friction of fragmented private databases.

That vision now has a more concrete commercial target: payments.

The timing makes sense. Stablecoins have become crypto’s clearest product-market fit. They are used for trading, remittances, dollar access, cross-border settlement and increasingly for business-to-business payments. Meanwhile, legacy payment infrastructure remains expensive and fragmented, especially across borders. Card networks work well for consumers in rich markets, but they are not optimized for every use case. SWIFT is powerful as a global bank messaging system, but it is not a real-time universal settlement layer. Correspondent banking remains slow, costly and inaccessible for many smaller institutions and emerging-market users.

Sui is trying to position itself in the gap between old infrastructure and new demand.

The Cost Argument Against Legacy Rails

Abiodun’s most direct attack is on cost. Traditional payment infrastructure often includes multiple intermediaries: issuing banks, acquiring banks, processors, card networks, compliance vendors, correspondent banks, foreign exchange providers and settlement systems. Each layer may provide value, but each also adds cost, latency and complexity.

For domestic card payments, the experience can feel instant to the consumer, but final settlement and merchant economics are more complicated. For cross-border transfers, the pain is even more visible. Fees can be high, settlement can take days, and users may have little transparency into the path their money takes.

This is where blockchain rails have a clean theoretical advantage. A blockchain can settle value directly on a shared ledger. Stablecoins can move across borders without relying on the same correspondent banking chains. Programmable payments can automate logic that would otherwise require contracts, reconciliation and back-office systems.

Sui’s claim is that it can provide this infrastructure at a much lower cost because it removes much of the coordination overhead. Instead of every institution maintaining separate ledgers and reconciling later, participants can operate on a shared state layer.

That is the ideal. The real world is messier.

Payment costs are not only technical costs. They also include fraud management, customer support, compliance, chargebacks, liquidity, sanctions screening, dispute resolution and regulatory reporting. A blockchain can reduce some costs, but it does not erase the need for trust, governance and consumer protection. If Sui wants to compete with Visa and SWIFT, it must prove not only that transactions are cheap, but that the full payment experience is cheaper, safer and easier for businesses and users.

Scale Is the Centerpiece of the Sui Pitch

Sui’s architecture was designed for high throughput and low latency. Unlike traditional account-based blockchains that process many operations sequentially, Sui uses an object-centric model that can process certain transactions in parallel. That design is central to its claim that it can support consumer-scale applications.

Adeniyi Abiodun and Sui supporters have repeatedly emphasized that payment infrastructure must operate at massive scale. A network that wants to compete with Visa cannot merely perform well during quiet market conditions. It has to handle bursts of activity, predictable finality, high uptime and a wide range of transaction types without turning expensive or unreliable when demand spikes.

This is where Sui sees its opening. If payments move increasingly toward stablecoins, tokenized deposits and machine-to-machine settlement, networks will need to handle far more than speculative trading. They will need to support payroll, subscriptions, remittances, merchant payments, microtransactions, gaming economies, AI-agent payments and financial applications that interact continuously.

The payment system of the future may not be built mainly for humans clicking “send.” It may be built for software agents making thousands of small, rules-based transactions in the background. Sui has been leaning into that idea: a network for digital assets, AI agents and real-time programmable commerce.

That is strategically clever. Competing directly with Visa at the point of sale is difficult. Competing for the next generation of payments, where AI agents, stablecoins and programmable wallets interact automatically, gives Sui a more differentiated story.

Privacy Is the Missing Piece

The most important part of Abiodun’s argument may be privacy. Public blockchains have a serious problem as payment systems: they expose too much.

For traders and crypto-native users, transparency can be useful. For ordinary consumers and businesses, it is a nightmare. No one wants their salary, spending habits, vendor relationships or treasury flows visible to the entire internet. A payment rail that turns every bank account into a public feed cannot become mainstream.

Abiodun has made this point directly, arguing that users should not have to operate in a system where their bank account looks like a social media timeline. Sui’s answer is native private transactions. According to recent reports, the network is preparing privacy features designed to make transaction data confidential while still allowing compliance where necessary.

This is a major strategic move. Privacy cannot be an afterthought if blockchain payments are going to challenge traditional rails. It must be built into the user experience. Consumers should not need to understand mixers, shielded pools or separate privacy layers. Businesses should not need to choose between operational secrecy and regulatory compatibility.

The challenge is designing privacy that institutions can actually use. Regulators will not accept payment systems that become black boxes for illicit finance. Enterprises will not use systems that expose sensitive commercial data. The viable middle ground is selective confidentiality: users and businesses get privacy by default, while authorized compliance processes can still function under defined rules.

If Sui can deliver that balance, it would solve one of the oldest weaknesses in public blockchain payments.

Stablecoins Give the Thesis Real Weight

The payment-rail debate changed once stablecoins became mainstream crypto infrastructure. Before stablecoins, blockchain payments were often tied to volatile assets. That made them difficult to use for everyday commerce. A user might send Bitcoin, but both sender and receiver faced price volatility. Merchants had little reason to hold assets that could fall sharply before they converted them.

Stablecoins solved much of that problem by putting familiar units of account on-chain. A dollar stablecoin can move across blockchain rails while preserving dollar pricing. That makes the payment conversation more practical.

Recent coverage reported that Sui processed more than $1 trillion in stablecoin volume since August 2025, a figure that has become central to the network’s argument that it is already moving meaningful value.

Volume alone does not prove replacement of Visa or SWIFT. Crypto volume can include trading, arbitrage and internal market activity rather than real-world commerce. But it does show that Sui is not talking about payments in a vacuum. The network is trying to build on measurable stablecoin traction, then add privacy, lower fees and better user experience.

The stablecoin layer is also where Sui’s competition will be fiercest. Solana, Ethereum layer-2 networks, Tron, Avalanche, Base and other chains are all fighting for payment relevance. Some have deeper stablecoin liquidity. Some have stronger distribution. Some have closer ties to exchanges, fintechs or institutions. Sui must show that its architecture produces a meaningful advantage beyond marketing.

Replacing Visa Is Not the Same as Replacing SWIFT

The phrase “replace Visa and SWIFT” sounds powerful, but the two systems perform different roles.

Visa is a card network that connects consumers, merchants, banks and processors. It is optimized for authorization, acceptance, fraud management and a consumer experience that feels instant. SWIFT is a messaging network used by financial institutions to communicate payment instructions across borders. It does not itself move money in the same way a blockchain settles tokens.

For Sui to replace Visa, it would need to compete at the consumer and merchant layer. That means wallets, point-of-sale integration, fraud protection, dispute handling, merchant acceptance, user onboarding and regulatory compliance. It would need to offer merchants a compelling reason to accept Sui-based payments and consumers a reason to use them.

For Sui to replace SWIFT, it would need to compete in institutional cross-border settlement. That means banks, fintechs, stablecoin issuers, payment companies and regulators would need to trust it as a settlement or coordination layer. It would also need liquidity, identity frameworks, compliance tooling and integration with existing financial systems.

Those are different fights. Sui may have a better chance at first in areas where legacy rails are weakest: cross-border payments, stablecoin settlement, emerging-market dollar access, digital commerce, AI-agent payments and crypto-native financial flows. Replacing every traditional payment rail is a long-term vision. Winning specific high-friction corridors is the realistic starting point.

The AI-Agent Payment Angle

One reason Sui’s thesis feels timely is the rise of AI agents. If software agents begin performing tasks, buying services, booking resources and managing digital assets on behalf of users, they will need payment rails that are programmable, fast and low-cost.

Traditional payment systems were designed around humans, merchants and banks. They were not designed for autonomous software agents making frequent small transactions across digital environments. Card payments can work for subscriptions and purchases, but they are clumsy for high-frequency machine-to-machine commerce. Bank wires are even less suitable.

Blockchain rails are naturally programmable. A smart contract can define conditions, limits, permissions and settlement logic. Wallets can be controlled by software. Stablecoins can move globally without relying on card credentials. This makes AI-agent payments one of the more plausible areas where blockchain infrastructure could leapfrog legacy systems.

Sui’s object-centric design may be especially relevant here because digital assets, permissions and payment logic can be treated as programmable objects. That could make the network attractive for applications where AI agents interact with owned assets, wallets, credentials and financial rules.

But again, the opportunity comes with risk. If AI agents control money, mistakes become expensive. Privacy matters. Reversibility matters. Limits matter. Fraud detection matters. A payment network for AI agents cannot simply be fast; it must be safe when autonomous systems behave unpredictably.

The Regulatory Wall

Every payment network eventually meets regulation. This is where many crypto payment visions fail.

Moving money is not only a technical act. It is a regulated activity tied to anti-money-laundering rules, sanctions law, consumer protection, tax reporting, capital controls and national monetary policy. Visa and SWIFT are embedded in systems that governments understand and influence. A blockchain that wants to replace them must either integrate with regulation or fight a battle it is unlikely to win.

Sui’s privacy ambitions make this more important, not less. Private payments are valuable for users and businesses, but regulators will scrutinize them intensely. The network will need to show that privacy does not mean lawlessness. That may involve selective disclosure, compliance keys, identity layers, regulated intermediaries or application-level controls.

Crypto purists may dislike that direction. But mass payment adoption almost certainly requires it. Consumers want privacy from the public, not necessarily immunity from all legal process. Businesses want confidentiality, not regulatory chaos. Institutions want programmability, but not existential compliance risk.

The winning blockchain payment network will probably not be the most ideologically pure. It will be the one that balances speed, cost, privacy and compliance in a way that real companies can use.

The Business Model Problem

Even if Sui can offer low-cost payments, someone has to build the business layer.

Visa is not just a technology network. It is a global acceptance brand. SWIFT is not just messaging software. It is an institutional standard embedded across thousands of banks. Their power comes from network effects, trust and integration.

Sui needs its own distribution channels. That could mean partnerships with stablecoin issuers, wallets, exchanges, fintech apps, payment processors, gaming platforms, AI-agent platforms and enterprise software providers. Users will not adopt Sui because the blockchain is elegant. They will adopt applications that hide the blockchain while giving them cheaper, faster and more private payments.

This is where Sui’s challenge becomes commercial rather than technical. It must persuade developers and companies to build on it. It must attract liquidity. It must make onboarding painless. It must avoid outages or congestion that damage trust. It must make compliance tooling available. It must turn infrastructure into products.

A blockchain does not replace Visa by announcing that it is cheaper. It replaces pieces of Visa’s market by becoming invisible inside better payment experiences.

Why the Claim Still Matters

It would be easy to say that Sui will not replace Visa or SWIFT anytime soon and leave it there. That would also miss the point.

The more important signal is that blockchain networks are no longer satisfied with being speculative settlement layers for crypto traders. They are moving directly toward the core of financial infrastructure. Stablecoins have made that ambition credible. Privacy upgrades make it more realistic. AI-agent commerce gives it a future-facing use case. High-throughput architecture gives networks like Sui a technical argument.

Sui’s claim is aggressive, but aggressive claims often define market direction. Solana pushed the idea of consumer-scale crypto. Ethereum pushed the idea of programmable money. Bitcoin pushed the idea of sovereign digital scarcity. Sui is now pushing the idea that payment rails should be global, programmable, private and cheap by default.

Whether Sui wins that market is uncertain. But the category itself is real.

The Bottom Line

Adeniyi Abiodun’s claim that Sui can replace Visa, SWIFT and other traditional payment rails should be read less as a near-term prediction and more as a strategic declaration. Sui wants to compete for the future of money movement, not just for DeFi liquidity or token speculation.

The network’s case rests on four pillars: lower cost, high scale, native privacy and programmable stablecoin infrastructure. Each pillar addresses a real weakness in today’s payment system. Cross-border transfers remain expensive. Public blockchains expose too much data. Legacy infrastructure is fragmented. AI-driven commerce may require payment systems that current rails were never designed to support.

But replacing traditional payment rails is not only an engineering problem. It is a trust problem, a regulatory problem, a distribution problem and a user-experience problem. Sui may be able to move value quickly and cheaply, but it still has to prove that businesses, consumers and institutions will trust it with real-world payments at scale.

The most likely path is not a sudden overthrow of Visa or SWIFT. It is gradual encroachment. Sui may first gain traction in stablecoin payments, AI-agent transactions, crypto-native commerce and cross-border corridors where the legacy system is weakest. From there, the question becomes whether the network can compound adoption into a broader payment ecosystem.

The vision is bold. The obstacles are enormous. But in a market where stablecoins are already forcing banks, card networks and fintechs to rethink settlement, Sui’s ambition is no longer fantasy. It is a serious bet that the next global payment rail will look less like a private banking network and more like programmable internet infrastructure.