Head to head

Vostok 8A92 vs Zenit-2

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

Vostok 8A92: 4,730 kg

Zenit-2: 13,740 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	Vostok 8A92	Zenit-2
Flights flown	44	35
Success rate	90.9%	82.9%
Payload to LEO (kg)	4,730	13,740
Liftoff thrust (kN)	3,996	7,300
Length (m)	30.84	57
Diameter (m)	2.99	3.9
Launch mass (t)	281	459
Stages	2	2

Vostok 8A92

Flight record

90.9% success rate40 of 44 flown · 4 failed

1962peak 1966 · 10 flights1967

Maiden flight 1962-06-01. Retired.

Zenit-2

Flight record

82.9% success rate29 of 35 flown · 6 failed

1985peak 1987 · 5 flights2004

Maiden flight 1985-04-13. Retired.

Vostok 8A92 is built by RKK Energiya of Russia.Zenit-2 is built by Yuzhnoye Design Bureau of Ukraine.

Full specifications and the complete launch history for each: Vostok 8A92 · Zenit-2.

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