Icarus

Active · Stratospheric birds for defense

YC F25

Website YC profile

Why it ranks

How the rank works

15signal of 100 · rising 13

team of 50Team size · YC's directory+8.9
went through YCProgram · this site+4
hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

Competitors

Other

Kairox SystemsShared: defense, aerospace, hardwareYC F26San FranciscoStartup →AI

BayMachinesShared: defense, hardware, systemYC X26San FranciscoStartup →Other

Null LabsShared: aerospace, defense, autonomousYC F25San FranciscoStartup →AI

GUILDShared: defense, deliverYC S26New York CityStartup →Other

KeresShared: defense, aerospace, flyYC F26DenverStartup →

Companies closest to Icarus
Company	Category	Status	Program
Kairox SystemsShared: defense, aerospace, hardwareYC F26ActiveOther	Other	Active	YCF26
BayMachinesShared: defense, hardware, systemYC X26ActiveAI, Devtools	AI, Devtools	Active	YCX26
Null LabsShared: aerospace, defense, autonomousYC F25ActiveOther	Other	Active	YCF25
GUILDShared: defense, deliverYC S26ActiveAI	AI	Active	YCS26
KeresShared: defense, aerospace, flyYC F26ActiveOther	Other	Active	YCF26

Adjacent

Other

Vernius Systems, Inc.Shared: defense, aerospace, autonomousYC S26San FranciscoStartup →Other

OrnadyneShared: defense, aerospace, birdYC X26Los AngelesStartup →Other

HEO RoboticsShared: defense, aerospace, flyYC S21SydneyStartup →Other

EdgerunShared: defense, hardware, militaryYC S26San FranciscoStartup →AI

Seeing SystemsShared: defense, hardware, weatherYC W26LondonStartup →

Companies next to Icarus
Company	Category	Status	Program
Vernius Systems, Inc.Shared: defense, aerospace, autonomousYC S26ActiveOther	Other	Active	YCS26
OrnadyneShared: defense, aerospace, birdYC X26ActiveOther	Other	Active	YCX26
HEO RoboticsShared: defense, aerospace, flyYC S21ActiveOther	Other	Active	YCS21
EdgerunShared: defense, hardware, militaryYC S26ActiveOther	Other	Active	YCS26
Seeing SystemsShared: defense, hardware, weatherYC W26ActiveAI	AI	Active	YCW26

Also from F25

All of F25

LakoniaDelivering AI-powered situational awareness in tactical environments.YC F25San FranciscoStartup →AI

LightberryRobots with soulYC F25San FranciscoStartup →AI

MOVEdotAI Agents for Hardware EngineeringYC F25San FranciscoStartup →AI

NorraThe AI equipment manager for post-acute careYC F25New York CityStartup →AI

AbsurdThe production canvas for AI film teamsYC F25Los AngelesStartup →AI

AirCaps AIVoice AI that hears what other models miss.YC F25San FranciscoStartup →

Company	Category	Status
LakoniaDelivering AI-powered situational awareness in tactical environments.team of 2ActiveAI	AI	Active
LightberryRobots with soulteam of 3hiringActiveAI	AI	Active
MOVEdotAI Agents for Hardware Engineeringteam of 10ActiveAI, Devtools	AI, Devtools	Active
NorraThe AI equipment manager for post-acute careteam of 3ActiveAI	AI	Active
AbsurdThe production canvas for AI film teamsteam of 10ActiveAI	AI	Active
AirCaps AIVoice AI that hears what other models miss.team of 5hiringActiveAI, Devtools	AI, Devtools	Active

About Icarus

Icarus is building the modern-day U-2 spy plane. Our autonomous solar aircraft fly at 60,000 feet for weeks at a time, eventually months and years, above weather and below satellites. They deliver persistent intelligence and connectivity for the military at a fraction of the cost of existing systems. The stratosphere is the forgotten frontier.

YC batch: F25 · Fall 2025
Status, per YC: Active
Category: Other
Team size: 50
Location: Los Angeles, CA, USA
Checked: 6h ago

YC tags: Hardware, Aerospace, Defense

Icarus in F25: 146 companies, 88% AI

Icarus: questions

Which YC batch was Icarus in?

Icarus was in Y Combinator's Fall 2025 batch (F25).

Is Icarus still active?

Y Combinator lists Icarus as active.

Where is Icarus based?

Icarus lists Los Angeles, CA, USA as its location on YC's directory.