Head to head

Fregat-M

Two vehicles in the same payload class. Every figure below comes from the same two sources for both rockets, and a row appears only when both publish the input.

Payload to low Earth orbit

Relative

Long March 3B/E: 12,000 kg

Soyuz 2.1b/Fregat-M: 8,200 kg

Side by side

11 comparable figures

The highlighted value wins the row. Rows where neither direction is better, like length or stage count, highlight nothing.

Metric	Long March 3B/E	Soyuz 2.1b/Fregat-M
Flights flown	78	36
Success rate	97.4%	100%
Payload to LEO (kg)	12,000	8,200
Payload to GTO (kg)	5,500	3,250
Launch cost	$70M	$48.5M
Cost per kg to LEO	$5,833	$5,915
Liftoff thrust (kN)	5,924	4,150
Length (m)	56.3	46.3
Diameter (m)	3.35	10.3
Launch mass (t)	456	313
Stages	3	4

Long March 3B/E

Flight record

97.4% success rate76 of 78 flown · 2 failed

2007peak 2025 · 13 flights2026

Maiden flight 2007-05-13. Still flying.

Soyuz 2.1b/Fregat-M

Flight record

100% success rate36 of 36 flown

2017peak 2021 · 8 flights2026

Maiden flight 2008-07-26. Still flying.

Long March 3B/E is built by China Aerospace Science and Technology Corporation of China.Soyuz 2.1b/Fregat-M is built by Progress Rocket Space Center of Russia (company profile on Space Index).

Full specifications and the complete launch history for each: Long March 3B/E · Soyuz 2.1b/Fregat-M.

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.