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14,448 startups · 29 programs

Relativity Space

Active · Building humanity’s multiplanetary future.

WebsiteYC profile

Why it ranks

How the rank works
20signal of 100 · rising 3
  • team of 2.5kTeam size · YC's directory+14
  • 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

OtherRATLOGShared: heavy lift, rocket, reusableYC F26DresdenStartup →AIRMFGShared: software defined, vertically integrated, manufacturingYC S21Fort WorthStartup →OtherGeneral AstronauticsShared: autonomous robotics, aviation and spaceYC W26San FranciscoStartup →OtherOrbital OperationsShared: launch vehicle, relativity, reusableYC W25Los AngelesStartup →AITanktwoShared: software defined, pioneering, technologyPlug and PlayFinlandStartup →
Companies closest to Relativity Space
Company
RATLOGShared: heavy lift, rocket, reusableYC F26ActiveOther
RMFGShared: software defined, vertically integrated, manufacturingYC S21ActiveAI
General AstronauticsShared: autonomous robotics, aviation and spaceYC W26ActiveOther
Orbital OperationsShared: launch vehicle, relativity, reusableYC W25ActiveOther
TanktwoShared: software defined, pioneering, technologyPlug and Play Not statedAI, Data

Adjacent

OtherRockeloxShared: heavy lift, reusable, buildingMassChallenge Switzerland and UK 2026United KingdomStartup →OtherSingularityShared: manufacturing, humanity, futureYC S23Los AngelesStartup →OtherInactiveBagaveev CorporationShared: space exploration, rocket, printedYC W15San FranciscoStartup →OtherCare WeatherShared: vertically integrated, space exploration, aviation and spaceYC W21OremStartup →OtherReditus SpaceShared: manufacturing, reusable, launchYC W25AtlantaStartup →
Companies next to Relativity Space
Company
RockeloxShared: heavy lift, reusable, buildingMassChallenge Switzerland and UK 2026Not statedOther
SingularityShared: manufacturing, humanity, futureYC S23ActiveOther
Bagaveev CorporationShared: space exploration, rocket, printedYC W15InactiveOther
Care WeatherShared: vertically integrated, space exploration, aviation and spaceYC W21ActiveOther
Reditus SpaceShared: manufacturing, reusable, launchYC W25 +1ActiveOther

Also from W16 in AI

All of W16
AIAcquiredPulpixBinge-watching technology for video platforms.YC W16New York CityStartup →AIRevlAI edited video souvenirs as a serviceYC W16San FranciscoStartup →AIInactiveAlgorizAlgoriz is an AI based algorithmic trading platform that enables you…YC W16New York CityStartup →AIAcquiredCaperPlug-and-play cashier-less retail powered by computer vision and AIYC W16Startup →AIDailyConversational Voice and Multimodal AI built with Open SourceYC W16San FranciscoStartup →AIDeepgramBuilding foundational AI for speech transcription and understanding.YC W16San FranciscoStartup →
Company
PulpixBinge-watching technology for video platforms.team of 15acquiredAcquiredAI
RevlAI edited video souvenirs as a serviceteam of 22ActiveAI
AlgorizAlgoriz is an AI based algorithmic trading platform that enables you…team of 4InactiveAI
CaperPlug-and-play cashier-less retail powered by computer vision and AIteam of 15YC top companyAcquiredAI
DailyConversational Voice and Multimodal AI built with Open Sourceteam of 126ActiveAI, Devtools
DeepgramBuilding foundational AI for speech transcription and understanding.team of 115released Improved modelsActiveAI, Devtools

About Relativity Space

Relativity is building humanity’s multiplanetary future. We invented a new approach to design, build, and fly our own rockets, starting with Terran 1 – the world’s first entirely 3D printed rocket, and Terran R, our next generation medium-heavy lift reusable launch vehicle. As a vertically integrated technology platform, Relativity is at the forefront of an inevitable shift toward software-defined manufacturing. By fusing 3D printing, artificial intelligence, and autonomous robotics, we are pioneering the factory of the future. Disrupting 60 years of aerospace, Relativity offers a radically simplified supply chain, building a rocket with fewer parts and faster iteration. We believe in a future where interplanetary life fundamentally expands the possibilities for human experience. Our long-term vision is to upgrade humanity’s industrial base on Earth and on Mars.

YC batch
W16 · Winter 2016
Status, per YC
Active
Category
AI
Team size
2,500
Location
Los Angeles, CA, USA
Checked
10h ago

YC tags: Machine Learning, Space Exploration, Rocketry, 3D Printing, Manufacturing

Relativity Space in W16: 122 companies, 18% AI

Relativity Space: questions

Which YC batch was Relativity Space in?

Relativity Space was in Y Combinator's Winter 2016 batch (W16).

Is Relativity Space still active?

Y Combinator lists Relativity Space as active.

Where is Relativity Space based?

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