SM-6 Blk I/IA vs Shahed-136: Cost-Exchange Ratio & Combat Analysis
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2026-03-21
3 min read
Overview
This analysis compares the SM-6 Blk I/IA, a US Multi-role BMD/AAW system costing $4.9M per unit, against the Shahed-136, an Iranian Attack drone costing $35K per unit. The cost-exchange ratio of 140.0:1 favors the attacker — meaning it costs the defender 140.0x more to intercept than the missile cost Iran to produce. At Operation Epic Fury burn rates of 6/day, the SM-6 Blk I/IA inventory of 750 units faces depletion in approximately 125 days. Multi-mission missile: anti-air warfare, ballistic missile defense, and anti-surface strike Low-cost delta-wing loitering munition with 2,500km range — mass-produced for attrition warfare
Side-by-Side Specifications
| Dimension | Sm 6 Blk I Ia | Shahed 136 |
|---|
| Unit Cost |
$4.9M |
$35K |
| Cost-Exchange Ratio |
140.0:1 |
140.0:1 |
| Range |
Multi-role BMD/AAW |
2500 km |
| Inventory |
~750 |
~3,000 |
| Annual Production |
165/yr |
— |
| Role |
Multi-role BMD/AAW |
Attack drone |
| Manufacturer |
RTX/Raytheon |
Iran / IRGC |
| Fuel |
Solid rocket |
— |
Head-to-Head Analysis
Cost-Exchange Economics
The SM-6 Blk I/IA costs $4.9M per unit while the Shahed-136 costs just $35K, creating a 140.0:1 cost-exchange ratio. Extremely unfavorable for the defender. This matchup is economically devastating. Iran can produce 140 Shahed-136 units for the price of a single SM-6 Blk I/IA interceptor.
The Shahed-136 has a 140.0:1 cost advantage over the SM-6 Blk I/IA. This asymmetry is a key factor in the conflict's economic sustainability.
Inventory & Depletion
Coalition forces have approximately 750 SM-6 Blk I/IA interceptors with annual production of 165 units. Iran maintains an estimated 3,000 Shahed-136 units with high-volume production capacity. The SM-6 Blk I/IA is already 17% depleted vs operational requirements. At Operation Epic Fury burn rates of 6/day, the SM-6 Blk I/IA inventory of 750 units faces depletion in approximately 125 days.
Iran holds a 4:1 inventory advantage in this matchup.
Tactical Engagement
The SM-6 Blk I/IA engages the Shahed-136 during the flight phase. With 2500km range, the Shahed-136 can be launched from deep within Iranian territory, complicating launch detection. Triple mission. 200+ fired in Red Sea ops. Only dual AAW+BMD.
The SM-6 Blk I/IA is designed to counter threats like the Shahed-136, but sustained engagement at 140.0:1 cost ratios creates long-term sustainability challenges.
Scenario Analysis
Mass salvo of Shahed-136 missiles
In a saturation attack using Shahed-136 systems, the SM-6 Blk I/IA battery would need to engage multiple targets simultaneously. At $4.9M per interceptor, a salvo of 20 Shahed-136 missiles would cost $700K to launch but $98.0M to intercept.
Shahed-136
Extended conflict (30+ days)
Over 30 days of sustained combat, the SM-6 Blk I/IA inventory faces significant depletion pressure. Annual production of 165 units translates to just 0.5 per day — far below consumption rates during active operations. Meanwhile, Iran produces approximately 3.3 ballistic missiles and 6.7 drones per day.
Attacker (Iran) — production outpaces defender replenishment
Complementary Use
The SM-6 Blk I/IA should be integrated into a layered defense architecture, not relied upon as a standalone solution against Shahed-136 threats. Cost-effective lower-tier systems (Iron Dome at $80K, or Iron Beam laser at $2/shot) should handle cheaper threats when possible, preserving expensive SM-6 Blk I/IA interceptors for high-value targets.
Overall Verdict
The SM-6 Blk I/IA vs Shahed-136 matchup produces a 140.0:1 cost-exchange ratio favoring the attacker. This is one of the most economically asymmetric engagements in modern warfare. For sustained conflict planning, interceptor production ramp-up and cost-reduction programs are critical to maintaining defensive capability.
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