Su-57 vs J-35AE: Russia Pushes India Toward Interim Fifth-Generation Capability
There are growing worries in the Indian Air Force (IAF) that Pakistan might buy China’s Shenyang J-35AE stealth fighters. As a result, Russia is apparently stepping up its efforts to get New Delhi to buy a few Sukhoi Su-57s. Moscow says that these would help the IAF make up for a possible lack of fifth-generation aircraft if the Pakistan Air Force (PAF) gets the J-35 soon. It says that the Su-57 is a temporary solution until the domestic Advanced Medium Combat Aircraft (AMCA), which is currently being built, starts being used in the middle of the 2030s.
Su-57 vs J-35AE: India Invites Bids for the AMCA Program
In a related move, the Ministry of Defense (MoD) sent a Request for Proposal to three shortlisted domestic companies on May 27. The MoD wants these companies to submit bids for the AMCA program within three months. Three groups competed: Tata Advanced Systems Ltd., a group led by Larsen & Toubro that included Bharat Electronics Ltd. and Dynamatic Technologies, and a third group made up of Bharat Forge, Bharat Earth Movers Limited (BEML), and Data Patterns.
Su-57 vs J-35AE: AMCA Prototype and Testing Timeline
According to the MoD’s request for official technical and commercial bids, the chosen company will work with the Aeronautical Development Agency, which is part of the Defence Research and Development Organization, to make five flying AMCA prototypes and one structural test aircraft. The prototype should be ready by 2029, and it will be driven at first by a General Electric F414 engine made in the US. It has to take its first trip within 30 months of the contract being signed.
Su-57 vs J-35AE: India Plans Long-Term Indigenous Fighter Production
The chosen vendor would also have to complete 1,800 test flights within a strict 84-month time frame. Once this is done, AMCA series production is scheduled to start sometime around 2035–2036. After that, the IAF wants to add seven squadrons, which would mean 140 to 150 planes.
Su-57 vs J-35AE: AMCA’s Advanced Features and Engine Plans
The AMCA should have advanced avionics, an advanced indigenous electronic radar system called the AESA, and the ability to take weapons both inside the ship for stealth missions and outside for heavier battle loads. Later, improved Mark 2 versions of the plane are likely to have more powerful powerplants made in the country or jointly created with other countries than the GE F414. This might be possible with the help of either Safran in France or Rolls-Royce in Britain.
Su-57 vs J-35AE: Private Sector Gains Bigger Role in Indian Aerospace
Officials in the industry said that the AMCA program is also different from India’s standard aerospace structure, which is based on Hindustan Aeronautics Limited (HAL). It makes the private sector not only suppliers but also leads integrators in India’s biggest domestic military aircraft project.
Su-57 vs J-35AE: Pakistan’s Fifth-Generation Ambitions Raise Concerns
Indian strategic circles are becoming more worried about Pakistan’s plans to build fifth-generation weapons systems at the same time that these changes are happening in India. Many new studies from around the world and in Pakistan suggest that Islamabad wants to buy about 40 J-35AE fighters. They say that they might be able to get these planes under concessional terms from Beijing, such as deferred payment plans and other forms of financial support. Deliveries are said to start soon. The PAF plans to use these planes as part of its Chinese-origin battle ecosystem. They could work with the KJ-500 airborne early warning and control assets as well as the HQ-19 air and missile defense systems.
Su-57 vs J-35AE: Reports of Pakistani Pilot Training in China
Separately, reports say that PAF pilots were going on “familiarization and training sorties” in China on stealth fighter jets made in China, either the older FC-31 variant or the export variant J-35AE created by Shenyang Aircraft Corporation.
It all started with the Shenyang FC-31 Gyrfalcon, a stealth fighter prototype that was shown off in 2012 for the export market as a cheaper alternative to the Lockheed Martin F-35 Lightning II fifth-generation fighting platform in the US. Even though it was built with fifth-generation features like low-observable shaping and advanced avionics, it was still only used as a developmental demonstrator and not as a fully operational frontline fighter. Over time, the design changed into the J-35 family, which includes naval versions that can be launched from carriers and the J-35AE, which is said to be the one that will be sent to the PAF and other foreign customers.
Su-57 vs J-35AE: Russia Continues Su-57 Negotiations With India
So, Russia is still trying to get India to buy about 40 Su-5 fighter jets, which is enough for about two air force units. Talks about this continued during President Vladimir Putin’s December 2025 state visit to New Delhi, where he was in charge of defense talks between India and Russia. The talks are still going on under the India–Russia Inter-Governmental Commission on Military Technical Cooperation, which is the main way for the two countries to work together on military issues. Officials and people in the business say that people continued to use this platform for exchanges and discussions at different levels after that.
Su-57 vs J-35AE: Geopolitical Irony of Russia and China
Some foreign analysts see a sense of comedy in the fact that Russia and China are both interested in possibly selling advanced fighter aircraft to both India and Pakistan at the same time. This is because of the current changes in geopolitics and the military. Beijing and Moscow have strong strategic, economic, military, energy, political, and diplomatic links that make them possible suppliers of advanced fighter aircraft to their nuclear-armed rivals on the subcontinent, who have a history of frequent military conflict.
Su-57 vs J-35AE: Russia Highlights Technology Transfer Advantages
Moscow seems to be putting the Su-57 proposal in the context of India’s decades-long defense relationship with Russia. They are stressing their willingness to share more advanced defense system know-how than other Western countries, like the US and France, usually do. Reports say that they had access to secret fighter source codes that control mission systems, electronics, and sensor integration on board. Russia has also talked about how the Hindustan Aeronautics Limited (HAL) facilities in Nashik, which are currently used for leased production of the Su-30MKI, might be able to be changed so that they can be used for Su-57 assembly or even full-scale production in India.
Su-57 vs J-35AE: Aero India 2025 Showcases Russian Stealth Fighter
Previously, the Su-57 was a main attraction at the Aero India 2025 air show in Bengaluru, where it was on display and flown as part of trials. It also showed off its low-observable airframe design, internal weapons bay layout, and integration of avionics. It also talked about its multirole strike and air superiority powers.
Su-57 vs J-35AE: Russia Offers Licensed Production in India
In this situation, Russia’s Su-57 sales pitch includes both sending a few fly-away platforms and working with India to make others. Over time, the number of Indian-made Su-57s could grow through technology transfer and licensed production, similar to what happened with Soviet and Russian aircraft programs in India starting in the late 1960s.
Su-57 vs J-35AE: Russia Seeks Stronger Defense Ties With India
Moscow also knows that India is still one of its few big defense partners that is still willing to work closely with it on military and technical issues, even though Russia is still involved in the conflict in Ukraine and is under pressure from sanctions because of it.
The Russian Su-57 sales pitch, on the other hand, is based on the idea that the IAF and the PAF don’t have the same level of capabilities, especially since the PAF is moving toward getting Chinese J-35 fighters. That case is strengthened by the fact that the Indian Air Force (IAF) only has 29 fighter squadrons, even though it is supposed to have 42. That’s a gap of 13 squadrons, with at least six of them being old SEPECAT Jaguar units that are about to retire.
Still, there are a lot of worries in the business world about the IAF getting Su-57s.
The first one has to do with technical development.
Su-57 vs J-35AE: Questions Over Stealth and Engine Performance
The Su-57 program has been criticized for a long time because of problems with developing the engines, making few planes, not knowing how stealthy they are, and tests taking too long. Even reviews that are generally positive have to admit that the plane puts maneuverability and aerodynamic performance ahead of the very low-observable design theory that is common among Western 5th-generation stealth fighters.
India’s experience with the failed FGFA (Fifth Generation Fighter Aircraft) program with Russia also casts a long shadow over the purchase of the Su-57. Based on the Russian PAK FA design, which later became the Su-57, India pulled out of this project in 2017–18, even though it had invested $295 million in it. This was partly because they were unhappy with the costs, the way they were sharing technology, the way they were splitting up work, and how mature the plane was overall at the time. Going back to pretty much the same basic platform, even if it’s called something different and has a different strategic purpose, would cause a lot of trouble in the IAF fighter community.
Adding the Su-57 would also make the IAF’s already difficult organizational problems even worse.
The force already has six different types of fighter aircraft: Anglo-French Jaguars, Soviet/Russian MiG-29s and Su-30MKIs, French Dassault Mirage 2000Hs and Rafales, and the Indian Tejas Light Combat Aircraft. This puts a lot of stress on its support and sustainment system. It is very hard to handle a fleet and provide support throughout its life because each platform needs its own supply chains for spare parts, maintenance and overhaul ecosystems, training pipelines, weapons integration frameworks, and specialized ground support infrastructure.
Su-57 vs J-35AE: Lifecycle Costs and Operational Pressures
In turn, this has led to a very disorganized structure for maintenance, with multiple engine repair lines, parallel inventories, and different simulator and technical training systems running at the same time. Adding yet another fighter type, especially a sophisticated fifth-generation stealth platform like the Su-57 that needs careful maintenance, would make things even more complicated. It would mean that existing fleets would have to deal with more stealth-specific servicing protocols, software, and avionics standardization challenges, and interoperability pressures.
Senior IAF planners are thought to have warned many times about rising lifecycle costs, less fleet availability, and long-term sustainment constraints, even though the force is still dealing with chronic squadron shortages.
Besides that, there were also money worries.
Su-57 vs J-35AE: Debate Over Imports Versus Indigenous Development
Critics in the industry and the IAF say that bringing in an interim fleet of two to three Su-57 units with forty to sixty planes could take resources, people, and institutional attention away from the AMCA at a time when India is trying to speed up its own aerospace capabilities. Others doubt that Russia can really deliver the planes India needs in the time and numbers that India needs, given the demands of the war in Ukraine and the limits of its defense industrial base.
How India reacts to Russia’s persistent insistence on the Su-57 option will ultimately determine whether its fifth-generation path is short-term and based on imports, or long-term and based on the AMCA as its main indigenous platform.
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