Head to head

Ariane 64 vs Proton-M Briz-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

Ariane 64: 21,900 kg

Proton-M Briz-M: 21,000 kg

Side by side

7 comparable figures

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

Metric	Ariane 64	Proton-M Briz-M
Flights flown	3	68
Success rate	100%	91.2%
Payload to LEO (kg)	21,900	21,000
Payload to GTO (kg)	11,700	4,500
Length (m)	63	53
Diameter (m)	5.4	7.4
Stages	2	4

Ariane 64

Flight record

100% success rate3 of 3 flown

Maiden flight 2026-06-17. Still flying.

Proton-M Briz-M

Flight record

91.2% success rate62 of 68 flown · 6 failed

2001peak 2013 · 9 flights2023

Maiden flight 2001-04-07. Still flying.

Ariane 64 is built by ArianeGroup of France (company profile on Space Index).Proton-M Briz-M is built by Khrunichev State Research and Production Space Center of Russia (company profile on Space Index).

Full specifications and the complete launch history for each: Ariane 64 · Proton-M Briz-M.

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