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Specification	Firefly Alpha Firefly Aerospace × remove	Proton K/DM-2 Khrunichev State Research and Production Space Center × remove
Flights	7	110
Success rate	57.1%	93.6%
Thrust	736 kN	—
Height	29.6 m	—
Diameter	1.82 m	—
Launch mass	54 t	—
LEO capacity	1,000 kg	—
GTO capacity	—	—
Launch cost	$15M	—
Reusable	No	No
Stages	2	—

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