Watch a Su-57 perform at an air display and it is easy to believe you are looking at the future of air power. The jet slows to a crawl, pitches over its own tail, and rotates flat in a maneuver that would end the career of most pilots and the airframe of most aircraft. The crowd gets what it came for: proof that somebody, somewhere, is still building daring fighters.
Then look at the inventory numbers, and the picture changes completely.
The prototype that became the Su-57 first flew in January 2010 from the factory airfield at Komsomolsk-on-Amur, deep in the Russian Far East. Fifteen-plus years later, open-source estimates generally place the operational fleet somewhere in the low dozens — a number that would be a rounding error in most air forces. Over roughly the same period, the F-35 program passed its thousandth delivery. That gap between what the Su-57 is and how many of it exist is the real story of the aircraft. And it says far more about the state of Russia's aerospace industry than it does about the jet itself.
Give the Design Its Due
It helps to start with the machine, because the machine is genuinely interesting.
The Su-57 is a twin-engine, single-seat multirole fighter with internal weapons bays, all-moving control surfaces, and thrust-vectoring nozzles on both engines. Russian officials credit it with supercruise — sustained supersonic flight without afterburner — and its airshow demonstrations leave little doubt about its aerodynamic authority. As a piece of pure airmanship, it belongs in any conversation about the most capable fighters flying.
The sensor architecture is where the design gets distinctive. The N036 radar suite doesn't rely on a single nose array; it adds side-facing radar panels to cover the forward hemisphere from angles a conventional fighter can't see, and it embeds L-band arrays in the wing leading edges. The choice of L-band is a deliberate bet, since longer wavelengths scatter off an aircraft differently than the X-band frequencies that most fire-control radars use. Whether the bet pays off against a modern low-observable aircraft is unproven, but it is a real idea, thought through, not a brochure fantasy. Layer on an infrared search-and-track system and a defensive optical suite, and the Su-57's designers clearly imagined a fight where no single sensor tells the whole truth.
Honesty cuts both ways, though. Western analysts have long judged the jet's radar cross-section to be larger than that of the F-22 or F-35, pointing to panel details, fasteners, and nozzle geometry that betray the shaping work. And the definitive engine intended for the aircraft — known internally as izdeliye 30 — has spent years in development while current production jets fly an interim powerplant. The design bureau's competence was never in question. The problem was never the drawing.
From Prototype to Production, Slowly
To understand why a promising design has stayed rare, you have to look at what happened around it.
The program that produced the Su-57 emerged from a Russia still digging out of the 1990s, when its aviation industry lost a generation of engineers, tooling, and funding. Sukhoi won the tender in 2002 and flew the first prototype eight years later — a genuinely impressive achievement for a program run on a fraction of the money behind its American counterparts.
The trouble started when prototype needed to become product. In 2010, Russia and India launched a co-development arrangement, the Fifth Generation Fighter Aircraft program, intended to share costs and produce a customized variant for the Indian Air Force. It dissolved in 2018 after years of arguments over work share, cost, and technology transfer. Whatever the merits of each side's position, the partnership's collapse removed money, time, and an export anchor from the program all at once.
The Russian air force signed a contract for 76 aircraft in 2019. That December, the first production jet crashed on a test flight before it could be delivered, after a failure in the flight-control system. The first production Su-57 finally reached an operational unit in December 2020. Since then, deliveries have trickled.
None of this requires a conspiracy theory to explain. Sanctions complicate the supply of high-grade electronics. The definitive engine is still maturing. A plant at Komsomolsk-on-Amur has finite capacity, and wartime production priorities compete for everything from skilled labor to machine tools. The Soviet system that built Su-27s by the hundreds no longer exists in that form, and no contract signature can summon it back.
What the War Has Shown
The Su-57's combat record is brief and revealing in both directions.
It appeared in Syria in 2018 for a short deployment that was more weapons trial and political signal than campaign. Its employment in the war in Ukraine has followed a consistent pattern reported by Western intelligence assessments: launch long-range air-to-air missiles and standoff cruise missiles from within or near Russian-controlled airspace, then stay there, well away from the dense belts of surface-to-air missiles on the Ukrainian side.
That is the rational way to use a scarce, expensive aircraft — and also an honest admission of the environment. In this war, neither side's fighters roam freely; ground-based air defense has dominated, and no fleet, of any generation, has delivered the quick and decisive air superiority that air power doctrine once promised.
There was a second lesson, delivered in June 2024, when satellite imagery circulated showing damage to at least one Su-57 parked at Akhtubinsk airfield, hundreds of kilometres from the front line. The strike, attributed to Ukrainian drones, didn't need to defeat the fighter in the air. It needed the fighter to be sitting still at a known base. Rare aircraft concentrate value in single places, and modern cheap munitions are patient.
A Hard Sell Abroad
For years the Su-57 had no export customer at all — a striking fact for a country that built its aviation industry partly on foreign sales. Reporting has repeatedly pointed to Algeria as the likely first buyer, though no contract has been publicly confirmed, and the details of any deal remain murky.
The hesitation is not hard to understand. Buyers remember the timeline: a fighter that first flew in 2010 and is still completing its engine. They can see that domestic deliveries run behind schedule, and they can do the arithmetic on whether an export order could be filled. Sanctions exposure adds risk that didn't exist when Sukhoi's earlier exports sold themselves. And the competing product, the F-35, is not really an aircraft anymore — it's a membership in a logistics, training, and software ecosystem with a thousand-aircraft installed base. Buying a fighter in the 2020s is less about the airframe than about which support system you want to join for the next thirty years.
Numbers Are the Story
The Su-57 will keep its "fifth-generation" designation, and on paper it has earned it. But generation labels describe design features. Air power is delivered by fleets — by production lines, munitions stockpiles, spare parts, trained maintainers, and money sustained over decades. The Su-57 has the first of these and has struggled with all the rest.
So the jet that stops crowds at airshows and the jet that barely registers in the order of battle are the same aircraft, and both facts are true. The second one is simply more telling. The story of the Su-57 is, in the end, a story about what it now costs to turn a brilliant design into a real weapon system — a cost measured less in engineering talent than in supply chains and sustained investment. Every country watching from the sidelines, including the ones that don't say so publicly, has taken note.