Russia is actively modernizing the fifth-generation Su-57 multirole fighter. The new aircraft supplied to the Russian Aerospace Forces have "received updated onboard systems and a weapons complex," writes military expert Peter Suchiu in an article for The National Interest.
The author was skeptical of this information, stating that this is another "advertisement of capabilities" of the Su-57, but without technical details. Suchiu wondered what "technical configuration" is being discussed and what advantage this gives the pilot.
The latest announcement came almost two months after UAC confirmed the testing of the Su-57 with the new "Product 177" engine.
In December 2025, a representative of Rostec stated that the new power plant can provide thrust up to 16,000 kgf in afterburner. At the same time, "Product 177" requires less fuel compared to other aircraft engines.
Russia claims that the Su-57 is the best. However, sales volumes suggest otherwise.
The fifth-generation aircraft received stealth technology and combined the functions of a fighter and attack aircraft to engage air, ground, and sea targets. Composite materials were used in the creation of the Su-57's airframe. Its aerodynamic configuration reduced radar and infrared visibility.
The Kremlin planned to receive about 76 Su-57 fighters by 2027-2028, but less than three dozen have been produced.
For comparison, the US Air Force has 183 Lockheed Martin F-22 Raptor fighters in service, and over 1300 Lockheed Martin F-35 Lightning II fighters have been delivered under export contracts, Suchiu added. He emphasized that Rosoboronexport is looking for foreign buyers for the Su-57, but "with mixed success."
Algeria is the only country that has confirmed the purchase of fifth-generation fighters. The United States has warned that this could lead to sanctions. Given this, it would not be surprising if Algeria abandons the deal.
The expert acknowledged that the Russian aircraft is advanced and has great potential. However, foreign customers should not risk purchasing the Su-57, as Russia lacks the funding for its mass production.