Head to head

Rokot/Briz-KM vs Vostok 8A92M

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

Rokot/Briz-KM: 1,850 kg

Vostok 8A92M: 3,800 kg

Side by side

8 comparable figures

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

Metric	Rokot/Briz-KM	Vostok 8A92M
Flights flown	31	93
Success rate	90.3%	98.9%
Payload to LEO (kg)	1,850	3,800
Liftoff thrust (kN)	1,870	3,996
Length (m)	29	30.84
Diameter (m)	2.5	2.99
Launch mass (t)	107	282
Stages	3	2

Rokot/Briz-KM

Flight record

90.3% success rate28 of 31 flown · 3 failed

2000peak 2013 · 4 flights2019

Maiden flight 2000-05-16. Still flying.

Vostok 8A92M

Flight record

98.9% success rate92 of 93 flown · 1 failed

1964peak 1979 · 8 flights1991

Maiden flight 1964-08-28. Retired.

Rokot/Briz-KM is built by Russian Aerospace Defence Forces of Russia (company profile on Space Index).Vostok 8A92M is built by RKK Energiya of Russia.

Full specifications and the complete launch history for each: Rokot/Briz-KM · Vostok 8A92M.

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