Introducing Constantinople: The fabric for banking’s AI era

In the fourth century, Rome faced a problem. The empire mostly worked, but every year it worked less well, and every year the cost of making it work grew higher. For a hundred years, emperors tried to fix things by tinkering. But nothing really changed. 

Rome’s answer was eventually strategic. The new emperor Constantine moved the Roman capital to a new city on the Bosphorus, free of Rome's accumulated problems, securely located at the heart of the world’s major trade routes. The new city, Constantinople, blazed with light for the next thousand years. 

The chief lesson is that Rome survived because it moved. Rome reached a point where incremental change was insufficient, and if Rome was to survive, it needed to start again on new foundations.

Banking has reached that same point. Banks everywhere face huge strategic and structural challenges. Declining margins, increased competition, and high costs owing to outdated tech and operations. In response, banks have tinkered. But nothing much has changed.

We think it’s time for banks to stop tinkering and start again on new foundations purpose-built for the AI era. 

That’s why we named our company, Constantinople.

Synthetic scale 

Most of what a bank does is identical from one bank to the next. Most of what it costs to run a bank is spent doing the same things that every other bank does.  Not just tech— but product, operations, compliance, security, it’s all basically identical between banks. 

Most banks think you need scale to get efficiencies across a commoditised cost base. But that’s only half right. While scale is important, a bank needn’t own scale itself. 

If a shared platform can solve tech, product, operations and compliance for many banks at once, every bank on that platform can achieve scale economics. We call this synthetic scale. It’s the founding idea of Constantinople.

Over the past five years we’ve built what we call “banking fabric”— channels, products, tech, data, operations, risk, compliance, security — designed to run as a single managed service, purpose built for the AI era. 

The distinction is important. Software is something a bank installs. A platform is something a bank builds-upon. Fabric is something a bank runs on. 

There’s nothing like Constantinople anywhere in the world. It’s a whole new way to run a bank. Constantinople gives banks synthetic scale and AI-native control where it matters. Banks operating on Constantinople are seeing CTI reductions of 30-50%, while also reaping the benefits of full digitisation, automated compliance, and industry leading cyber protection and resilience.  

When running on Constantinople, banks get to focus on the business of banking. They keep what makes them unique: their brand, customers, proposition design and development, pricing and risk appetite, balance sheet management, and their license. The bank sets policy, appetite and decision-making, while Constantinople executes as directed.

The turning point

When we started Constantinople, people said: “Amazing idea. But it’s too hard to build. You’ll never get your first bank live.” 

But we did. Great Southern Bank went live in 2024. 

Afterwards, people said: “You’ve done a good job launching greenfield banks, but you’ll never migrate a full-service retail bank with all its operational complexity.” 

But we did. Last week we successfully migrated Move Bank onto Constantinople. 

Move Bank has shifted everything onto Constantinople — every customer, every product, every channel, all operations, compliance, security, reporting. Everything. 

It’s the most complete transformation of a bank, anywhere in the world, in so short a time — achieved in under a year.   

Move Bank now has major bank capability and is reducing its CTI by over 30%. Not in five years, but already, today.

Let’s pause on this change. You can’t do this by just installing software or building parts of the bank on new rails. Instead, you need to change the bank’s entire operating model, with AI at the core. 

You need synthetic, AI enabled scale via an operating system that weaves through all the bank’s activities — tech, product, channels, operations, compliance, security and reporting. The fabric.

Best of all, Move remains entirely Move. It’s now completely focused on its customers, its purpose, its balance sheet and its licence. Move's CEO Mike Currie summed it up: 

“Constantinople gives us the freedom to run our bank the way we want. We’ve kept our brand and identity on the outside, but on the inside we’re operating on Constantinople’s banking fabric built for the AI era. Across every aspect of our bank – customer experience, channels, product, risk, compliance, security, operations – Constantinople has completely transformed our bank. It’s remarkable. We have more control over our bank today than ever before. We couldn’t be happier.”

Five banks run on Constantinople today. Move is the first to migrate its entire business onto Constantinople. Two more full bank migrations will complete in the coming months, and we’ll have ten banks running on Constantinople by mid 2027.

Operating a bank with AI at the core 

We often get asked: How? 

How can Constantinople so completely transform a full-service bank? 

How can Constantinople do what is so difficult, even impossible, for a bank to do itself? 

Constantinople is not a point solution for banks. It’s an entirely new operating model built around AI. Constantinople was built around AI from the ground up, rather than retrofitted onto legacy systems and processes. No other approach can deliver this level of transformation, operational efficiency, and automated compliance.

Constantinople has made responsible, regulator-ready AI work at scale. Constantinople enforces a single unified data model across all banks, with underlying access to structured, governed data, which means agents can find the right information at the right time, reason reliably within limits and approvals, handle operational exceptions, and do so with full traceability and rollback. 

Importantly, Constantinople overlays continuous observability and monitoring, together with standardised benchmarks and evaluations to ensure our agents behave consistently and as expected. This creates a high degree of trust in our agentic decision-making. This is what banks and regulators expect.

Also, automated risk, compliance and audit runs continuously in the background across all activities, self-executing and catching issues in real-time.

Constantinople can do this because our entire stack and operating model has been designed—from day one—to make highly governed AI work in regulated environments. 

Constantinople gives banks back control

Sometimes banks fear losing control if they move onto Constantinople’s fabric. But this is the wrong way to think about things. 

Today, most banks have the illusion of control. Virtually no bank knows what’s really happening inside their bank. There’s no real-time visibility into workflows. No automated controls. Banks review only a tiny fraction of their decisions through periodic spot-checks and audits. Everything is manual and split across fragmented systems.

Counter-intuitively, Constantinople gives banks back control.

Constantinople brings the whole bank into real-time view: customer outcomes, operational health, risk posture, compliance status, and emerging signals, all in one place. Constantinople delivers automated QA on workflows and decisioning. Compliance is no longer a retrospective exercise. It’s a live control surface, which self-executes and scans with precision and auditability.

What comes next

Constantinople was built in Australia, under one of the world's most demanding bank regulatory regimes, by a team of 175 product managers, engineers and operators who understand banking and believe Australia is precisely the right place to prove something this hard. 

Our mission is to power the world's banks: to make banking better, more resilient and dramatically cheaper to run, at the same time. Mid-market banks—the ones closest to their customers—should not have to choose between these things. They should not be structurally condemned to the cost base of the last century, and the constraints on service and resilience that come with it, while the giant banks compound their advantage in the AI era.

Constantinople collapses that disadvantage. In the era now beginning, advantage in banking won’t belong to who can afford the largest tech and operations team, but to who can serve customers best while the AI-powered machinery runs quietly beneath them.

We’ve now proven that the single-biggest risk in any bank transformation (namely, migration risk) can be successfully managed through a repeatable AI-playbook, and that the speed to value and CTI benefits are very large indeed.

Rome didn’t save itself by trying harder. It saved itself by moving. To every bank weighing another decade of tinkering and renovation against the bolder path: the new city is built, and the lights are on.

To the Bosphorus!