Compare · Rockets

Space Launch System Block 1 vs Atlas V 421

RANKED BY PAYLOAD TO LOW EARTH ORBIT #4 VS #51 CHECKED 29 SEPT 2026

Side by side

Verdict

Space Launch System Block 1 ranks #4 of 311 on Payload to low Earth orbit (95,000 kg); Atlas V 421 ranks #51 (14,067 kg).

Rank 04 of 311 · leads

Payload to low Earth orbit

95,000 kg

Launches2

Success rate100%

Payload to GTO—

First flight16 Nov 2022

Height98 m

Liftoff thrust39,000 kN

Launch mass2,628 t

Launch cost$2,000,000,000

ReusableNo

StatusActive

Rank 51 of 311

Payload to low Earth orbit

14,067 kg

Launches9

Success rate100%

Payload to GTO6,890 kg

First flight11 Oct 2007

Height58.3 m

Liftoff thrust—

Launch mass433 t

Launch cost$123,000,000

ReusableNo

StatusRetired

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More Space Launch System Block 1 matchups

Source The Space Devs — Launch Library 2 Last checked 29 Sept 2026