Signals Inbox·August 22, 2026·Defense Tech

Castelion or Anduril: who's ahead today?

Anduril is clearly ahead overall today, but Castelion has moved fast enough in affordable hypersonic missiles to make the most important part of the weapons race much closer than the companies' size suggests.

Q1Why are Castelion and Anduril being compared at all?

Castelion and Anduril are increasingly competing for the same Pentagon idea: weapons should be developed faster, funded with more private capital and manufactured in quantities that traditional defense programs rarely reach.

The comparison has become much more direct lately. Anduril moved from drones and autonomy into long-range strike with Barracuda and into propulsion through its Adranos acquisition. Castelion started with hypersonic missiles and is now expanding toward longer-range strike and air-defense systems. Both companies want to show that advanced weapons can be designed around cost and manufacturing from day one.

The Pentagon itself brought the comparison into focus when it created parallel pathways for low-cost long-range weapons. Anduril's Barracuda-500M framework covers at least 3,000 surface-launched cruise missiles over three years. Castelion's Blackbeard framework calls for at least 500 hypersonic missiles a year once testing and validation are complete, with the government seeking room to buy far more.

Their ambitions are still different in scale. Anduril wants to become a broad new defense prime spanning aircraft, missiles, underwater systems, sensors and battlefield software. Castelion is currently making a much narrower bet around mass-produced missiles. They are direct rivals where those strategies now overlap: affordable long-range weapons and the factories needed to produce them quickly.

Q2Why is Castelion vs Anduril harder to call than it looks?

Anduril is far ahead of Castelion as a defense company today, while Castelion has moved fast enough in hypersonic missiles to make the narrower weapons race genuinely competitive.

The easy answer would be to compare company size and stop there. Anduril already generates billions of dollars in annual revenue, sells across several military domains and has programs with both the U.S. government and allied militaries. Castelion was founded in late 2022 and is still centered on Blackbeard.

Yet the Pentagon has a very specific problem these days: it needs many more long-range missiles, and it needs them at prices that allow inventories to grow into the thousands. Castelion built the company around that problem. In under four years, according to its latest financing announcement, it took Blackbeard from a clean sheet to repeated flight testing, military integration, pre-production orders and a production framework.

So there are really two races here. Anduril currently leads in commercial scale, customer breadth, manufacturing infrastructure, capital and software. Castelion deserves a much closer look on missile development speed, affordable hypersonics and the concentration of its manufacturing effort.

Q3Who is actually bigger today, Castelion or Anduril?

On commercial scale, Anduril is miles ahead of Castelion today.

The Financial Times reported that Anduril generated $2.2 billion of revenue in 2025. Castelion does not disclose annual revenue. Its latest financing announcement gives us a different number: more than $500 million of U.S. military contracts secured over the previous 18 months.

Those figures measure different things. Revenue records work already delivered during a period; contract value can include work that will be performed later. We therefore should not compare $2.2 billion with $500 million as though they were sales from the same year.

Even with that limitation, the order of magnitude is clear. Anduril has already crossed into large defense-contractor territory, while Castelion is only beginning the move from development work toward recurring production.

Anduril's business is also spread across many programs. Recent examples include a $363 million order from U.S. Customs and Border Protection for more than 200 additional Sentry towers, the Australian Ghost Shark program and several U.S. military aircraft, networking and counter-drone programs. Castelion's commercial story still depends heavily on Blackbeard.

On current commercial scale, this one isn't close.

Q4Who is growing faster right now, Castelion or Anduril?

Castelion is being revalued faster, but Anduril currently has the stronger evidence of actual business growth.

Anduril roughly doubled revenue from about $1 billion in 2024 to $2.2 billion in 2025. Adding around $1.2 billion of annual revenue in a single year is more impressive than doubling from a tiny base, particularly in defense where production and procurement cycles can stretch for years.

Castelion's revenue growth remains impossible to calculate publicly. What we can measure is how quickly the company has moved through the procurement system. Blackbeard progressed from integration contracts to a $49.998 million Navy development award, then a $105 million F/A-18 integration contract and a $23.4 million firm-fixed-price order for 50 pre-production weapons and their containers.

Investor expectations have moved even faster. Castelion's latest round values the company at $13 billion, versus an estimated valuation around $2.8 billion after its previous financing. That is roughly a 4.6-fold jump. Anduril's two latest completed rounds moved its valuation from $30.5 billion to $61 billion, almost exactly a doubling.

Castelion wins on acceleration in perceived future value. Anduril wins on the harder number for now: growth already showing up as revenue.

Q5Who is turning military interest into real contracts faster?

Anduril still has the stronger contract record, although Castelion's Blackbeard progression is one of the fastest procurement ramps we can find among current defense startups.

Anduril has already converted several very different technologies into substantial customer commitments. Australia moved Ghost Shark from a three-prototype development effort into an A$1.7 billion five-year program covering dozens of autonomous underwater vehicles, support and continued development. Australia's Defence Ministry said all three prototypes had arrived on budget and ahead of schedule.

The U.S. Army offers another type of evidence. It recently created a ten-year enterprise contracting vehicle for Anduril with an estimated ceiling of up to $20 billion. The ceiling should not be confused with guaranteed revenue. The more interesting detail is that the Army said it was consolidating more than 120 previous procurement actions involving Anduril into one framework. Customers usually do that after buying repeatedly.

Castelion has much less history, but its sequence is unusually clean. Development funding led to operational-platform integration. Integration led to F/A-18 certification work. The Navy then placed its first delivery order for 50 Blackbeard pre-production prototypes. Castelion now says it has accumulated more than $500 million of U.S. military contracts in 18 months.

For Castelion, the next conversion is the one that counts most: going from dozens of pre-production missiles to recurring annual orders measured in hundreds and eventually thousands. Anduril has already crossed comparable prototype-to-program transitions in more than one product family.

Q6Are Blackbeard and Barracuda really fighting for the same budget?

Blackbeard and Barracuda increasingly compete for the same long-range-strike dollars, but they solve the problem with very different weapons.

Anduril's surface-launched Barracuda-500M is a low-cost cruise missile with more than 500 nautical miles of range and a 100-pound payload. Anduril says roughly 70% of the weapon uses commodity components and that assembly takes about 30 hours with ten common hand tools. The Pentagon's framework calls for at least 3,000 systems over three years.

Castelion's Blackbeard aims at a harder performance regime: affordable hypersonic strike. Army budget documents describe the ground-launched version as a lower-cost high-speed weapon designed to complement existing Precision Strike Missile capabilities. The Navy is separately integrating Blackbeard onto the F/A-18, which could give carrier aircraft a new long-range hypersonic option.

The split is pretty simple. Barracuda tries to make long-range cruise missiles simple enough to buy in huge quantities. Blackbeard tries to push hypersonic weapons into a cost range where quantity becomes realistic.

The Pentagon is currently funding both ideas. A future conflict could easily require both.

Blackbeard vs Barracuda-500M

Q7Who is closer to producing missiles by the thousand?

Anduril is slightly closer to proven high-volume missile production today, while Castelion has built a credible route to catch up quickly.

Anduril already operates a dedicated Barracuda production facility of more than 115,000 square feet in Southern California, where the company says Barracuda variants are being produced. Higher-volume manufacturing can later move into Arsenal-1 in Ohio. Poland has also agreed to establish local production of the surface-launched Barracuda-500M.

Castelion is at an earlier production stage. The Navy's 50-unit Blackbeard order will exercise the manufacturing system before operational fielding, while the Pentagon framework provides for a minimum of 500 missiles annually after testing and validation. The government has separately said it is seeking authorization and appropriations that could support more than 12,000 Blackbeards over five years.

We should be careful with that 12,000 figure. It is an ambition for future procurement, not a booked order. Even so, it tells us what scale Castelion and the Pentagon are designing around.

Anduril has the advantage today because Barracuda production has started and its contracted framework begins with a larger volume. Castelion can flip this section if Blackbeard clears validation and Project Ranger demonstrates sustained production in the hundreds, then thousands.

Q8Which company is attacking the Pentagon's missile shortage more directly?

Castelion has the more direct answer to the shortage of affordable hypersonic weapons, while Anduril is attacking the broader shortage of affordable precision weapons.

The economics of Blackbeard are the reason Castelion has attracted so much attention lately. The Navy's first delivery order is worth $23.4 million for 50 pre-production Blackbeard prototypes plus 50 storage and shipping containers. Dividing the contract mechanically gives about $468,000 per missile-and-container set, although that figure should never be presented as a clean production unit price because the contract includes the associated containers and these are pre-production systems.

That still places the program in a radically different cost conversation from traditional U.S. hypersonics. Army budget documents show how capital-intensive existing hypersonic programs remain. The fiscal 2027 Long-Range Hypersonic Weapon procurement request, for example, allocates more than $300 million while funding only a very small number of complete rounds alongside support and program costs.

Anduril addresses magazine depth across more categories. Barracuda is designed around commodity components and simple assembly, while its Mississippi operation gives the company a separate solid-rocket-motor production base. Anduril can attack shortages in missiles, motors and autonomous platforms at the same time.

If Washington's immediate question is how to put large numbers of hypersonic weapons into magazines, Castelion currently has the cleaner proposition. If the question expands to affordable military mass across many weapon types, Anduril has the stronger industrial answer.

Q9Who has the stronger manufacturing engine today?

Anduril has the stronger manufacturing engine today because it has already moved several unrelated defense products into dedicated production facilities.

The newest proof is Arsenal-1. The roughly five-million-square-foot Ohio site produced its first Anduril collaborative combat aircraft only months after production activity began there. The Air Force had already moved Anduril's FQ-44A from prototype into the first production phase of the Collaborative Combat Aircraft program.

Anduril has also opened a dedicated Ghost Shark factory in Australia, built the Barracuda line in California and expanded solid-rocket-motor capacity in Mississippi. These factories serve different product families, which is much harder operationally than scaling one assembly line.

Castelion is concentrating its industrial effort at Project Ranger in New Mexico. The 1,000-acre campus will produce solid rocket motors, perform static testing and assemble finished weapons. Castelion's latest financing disclosure says the company had already committed more than $250 million of private infrastructure spending there and now plans to invest hundreds of millions more.

Castelion may eventually achieve higher throughput in its chosen niche. Today Anduril simply has more evidence that its manufacturing model works across air, sea and missile programs.

Manufacturing position today

Q10What can Anduril do that Castelion cannot easily copy?

Anduril's hardest advantage for Castelion to copy is Lattice, because Anduril can compete above the individual weapon level.

The U.S. Army recently made Anduril responsible for leading the common data baseline for its Next Generation Command and Control effort. Anduril is working with Palantir and other vendors to create the data layer connecting applications, hardware and battlefield networks across Army formations.

That puts Anduril in a very different position from a conventional missile supplier. A Barracuda can be sold as a weapon, but Lattice can also help coordinate sensors, targeting information, autonomous systems and weapons from multiple manufacturers. The company gets another route into the customer even when an Anduril missile or drone does not win every competition.

The Air Force gives us a second example. Alongside the FQ-44A aircraft, Anduril was selected to continue competing on mission autonomy for Collaborative Combat Aircraft. Hardware and autonomy can therefore reinforce each other without having to be purchased as one closed package.

Castelion's moat is deeper in a narrower area: propulsion, guidance, rapid flight testing and the manufacturing economics of hypersonic missiles. That could become extremely valuable. Today, though, Castelion has no comparable software position across the rest of the battlefield.

Q11Does Castelion's focus let it move faster than Anduril?

Castelion's narrow focus is giving it exceptional speed in missiles right now.

Almost every major Castelion investment has pushed the same product system forward. The company developed Blackbeard, conducted more than 25 flight tests by late 2025, won Army and Navy integration work, committed private money to Project Ranger, secured F/A-18 integration funding and then received the Navy's first 50-unit delivery order.

That concentration helps explain how a company founded in late 2022 reached this stage so quickly. A propulsion improvement can feed Blackbeard directly. A new manufacturing process can be installed at the same missile campus. Flight-test lessons go back into the same core architecture.

Anduril divides engineering and management attention across collaborative combat aircraft, counter-drone systems, underwater vehicles, cruise missiles, rocket motors, command-and-control software, surveillance towers and several other programs.

Anduril gets diversification and cross-selling from that breadth. Castelion gets focus. In affordable hypersonics, the focused model has been fast enough that a four-year-old company is already being discussed as a serious future missile producer rather than a promising laboratory project.

Q12Did Anduril buy too much of its lead?

Acquisitions accelerated Anduril's rise, but the company has done enough after the purchases to show that its lead cannot be dismissed as bought-in technology.

Area-I brought Anduril the ALTIUS drone family. Dive Technologies supplied the foundation for the undersea business. Adranos added solid rocket motors. Blue Force Technologies brought the Fury aircraft that became the basis for Anduril's Collaborative Combat Aircraft entry.

A simple acquisition roll-up would be less impressive. What happened after those deals is more interesting. Dive's technology fed into Ghost Shark, which became a five-year Australian program of record. Fury moved into Air Force flight testing and then production. Adranos became part of a larger push to expand domestic rocket-motor manufacturing.

Anduril has become good at taking specialist hardware teams and plugging them into its capital, software, manufacturing and government-sales machine.

Castelion is still much more internally concentrated. That gives us a cleaner view of what its founding team built itself, but it has not yet shown the same ability to absorb other companies and turn their technology into major programs.

Q13Who has more money, and what are investors really pricing in?

Anduril still has much more financial firepower, while Castelion's new $13 billion valuation shows investors now expect it to become far more than a small hypersonic specialist.

Anduril's latest completed financing raised $5 billion at a $61 billion valuation. A later report said the company was discussing another round around a $100 billion valuation, but talks are not a completed financing, so $61 billion remains the confirmed benchmark.

As seen above, Anduril's most recently reported annual revenue was $2.2 billion. The $61 billion valuation therefore represented roughly 28 times that revenue. Investors are already pricing in years of continued expansion into new military programs.

Castelion's newly closed financing combines $800 million of equity with $250 million of committed revolving credit and values the company at $13 billion. Castelion says it has secured more than $500 million of U.S. military contracts over 18 months, but it does not publish annual revenue, so a meaningful revenue multiple cannot be calculated.

The use of the new capital tells us where the bet is going. Castelion plans to push Blackbeard toward maximum production, accelerate a much longer-range strike weapon that has already been under development for several years and build lower-cost defensive systems.

Investors are effectively betting that Castelion can reuse the same propulsion, components and manufacturing methods across an entire missile family. If that works, $13 billion may eventually look like the valuation of an emerging missile prime. If Blackbeard struggles to reach production economics, the valuation will have run far ahead of the operating business.

Q14Who is better positioned outside the United States?

Anduril is far ahead of Castelion internationally today.

Australia is the strongest example. Ghost Shark has moved into a sovereign Australian manufacturing program with a local factory and a supply chain involving more than 40 Australian companies. Anduril is therefore embedded in an allied defense-industrial base instead of simply exporting equipment from the United States.

The company has lately started doing the same thing with missiles. Poland's state-owned PGZ and Anduril agreed to establish localized Barracuda-500M production in Bydgoszcz. Anduril has also built relationships in the United Kingdom, the Netherlands and the Middle East across other autonomous and counter-drone programs.

Castelion's meaningful procurement traction remains overwhelmingly American. Its partnership with Saronic to demonstrate Blackbeard from an autonomous surface vessel broadens the number of possible launch platforms, but it does not yet give Castelion an international production network or a major foreign program.

That gap is difficult to close quickly. Selling to another government involves export approvals, local industrial politics, procurement relationships and often domestic production. Anduril has already learned how to do all four.

Q15So who is winning now, Castelion or Anduril?

Anduril is clearly winning the overall race today; Castelion is the more dangerous challenger in affordable hypersonic missiles.

Three areas decide the result for us.

First, Anduril already operates at a scale Castelion has yet to reach. It has large recurring government customers, several product families moving into production and a presence across the U.S. military and allied governments.

Second, Anduril has more ways to stay inside a customer account. It can sell aircraft, autonomous underwater vehicles, counter-drone systems, missiles, sensors and networking, while Lattice gives it a position in the software connecting those systems. Castelion currently lives much closer to one central procurement thesis: Blackbeard and the missile technologies around it.

Third, Anduril has already repeated the difficult transition from prototype to serious program. Ghost Shark became an Australian program of record. The FQ-44A moved into Air Force production. The Army has consolidated a large number of previous Anduril purchases into an enterprise vehicle. Castelion is now approaching that stage with Blackbeard, but its largest production volumes still sit ahead of it.

Castelion can narrow the gap quickly. We would look for four things over the next several quarters: successful Blackbeard validation, operational fielding on schedule, evidence that unit costs stay low as production rises, and firm orders that push annual deliveries from dozens into hundreds. Its longer-range strike and air-defense programs would then need to show that Blackbeard created a reusable missile platform rather than one exceptional product.

Anduril has a different test ahead. Arsenal-1 must prove it can manufacture several complex systems efficiently at the same time. The FQ-44A needs to turn production status into sustained Air Force procurement. Lattice needs to keep winning a central role while the Pentagon pushes open architectures and multiple vendors. If Anduril clears those tests, the gap becomes much harder for any defense startup to close.

For now, Castelion is moving extraordinarily fast inside one of the Pentagon's most important weapons categories. Anduril is already operating like a new defense prime. That is the bigger race, and Anduril is ahead.

Castelion vs Anduril: who leads today?