Compare · Rockets

Space Launch System Block 1 vs Atlas V 521

RANKED BY PAYLOAD TO LOW EARTH ORBIT #4 VS #55 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 521 ranks #55 (13,490 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 55 of 311

Payload to low Earth orbit

13,490 kg

Launches2

Success rate100%

Payload to GTO6,475 kg

First flight17 Jul 2003

Height58.3 m

Liftoff thrust7,203 kN

Launch mass590 t

Launch cost$135,000,000

ReusableNo

StatusRetired

Try another pair

More Space Launch System Block 1 matchups

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