HUD

Active · Platform and marketplace for RL environments and AI data

YC W25

Website YC profile

Why it ranks

How the rank works

13signal of 100 · rising 8

team of 24Team size · YC's directory+7.2
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

CueBenchShared: post training, reinforcement learningYC S26San FranciscoStartup →AI

AviroShared: training dataset, post training, reinforcement learningYC X25San FranciscoStartup →AI

Vibrant LabsShared: post training, reinforcement learning, environmentYC W24San FranciscoStartup →AI

AshrShared: post training, reinforcement learning, infrastructureYC W26San FranciscoStartup →AI

OsmosisShared: post training, reinforcement learning, specificYC W25San FranciscoStartup →

Companies closest to HUD
Company	Category	Status	Program
CueBenchShared: post training, reinforcement learningYC S26ActiveAI, Data	AI, Data	Active	YCS26
AviroShared: training dataset, post training, reinforcement learningYC X25ActiveAI	AI	Active	YCX25
Vibrant LabsShared: post training, reinforcement learning, environmentYC W24ActiveAI, Devtools	AI, Devtools	Active	YCW24
AshrShared: post training, reinforcement learning, infrastructureYC W26ActiveAI, Data	AI, Data	Active	YCW26
OsmosisShared: post training, reinforcement learning, specificYC W25ActiveAI, Devtools	AI, Devtools	Active	YCW25

Adjacent

Deep CogitoShared: post trainingSPC 2024San FranciscoStartup →AI

HopperShared: post training, modelYC F26San FranciscoStartup →Other

EdotEnvShared: post training, reinforcement learning, environmentYC S26San FranciscoStartup →AI

JigsawShared: post training, data, labsspeedrun SR005San FranciscoStartup →AI

TwolabsShared: training dataset, high quality, environmentYC X26San FranciscoStartup →

Companies next to HUD
Company	Category	Status	Program
Deep CogitoShared: post trainingSPC 2024Not statedAI	AI	Not stated	SPC2024
HopperShared: post training, modelYC F26ActiveAI, Devtools	AI, Devtools	Active	YCF26
EdotEnvShared: post training, reinforcement learning, environmentYC S26ActiveOther	Other	Active	YCS26
JigsawShared: post training, data, labsspeedrun SR005Not statedAI, Data	AI, Data	Not stated	speedrunSR005
TwolabsShared: training dataset, high quality, environmentYC X26ActiveAI, Devtools	AI, Devtools	Active	YCX26

Also from W25 in AI

All of W25

Agentin AIFoundational model researchYC W25San FranciscoStartup →AI

MisprintMisprint is building Robinhood for Pokemon cardsYC W25New York CityStartup →AI

Sherpa LabsFrontier DataYC W25San FranciscoStartup →AI

TrainLoopReasoning Fine-TuningYC W25San FranciscoStartup →AI

.WaveInference for real-time AIYC W25ParisStartup →AI

10xAI Sales Teams for Dental PracticesYC W25San FranciscoStartup →

Company	Category	Status
Agentin AIFoundational model researchteam of 2ActiveAI	AI	Active
MisprintMisprint is building Robinhood for Pokemon cardsteam of 4hiringActiveAI	AI	Active
Sherpa LabsFrontier Datateam of 5ActiveAI, Data	AI, Data	Active
TrainLoopReasoning Fine-Tuningteam of 6hiringActiveAI, Devtools	AI, Devtools	Active
.WaveInference for real-time AIteam of 2ActiveAI, Devtools	AI, Devtools	Active
10xAI Sales Teams for Dental Practicesteam of 3hiringActiveAI, Data	AI, Data	Active

Founders

Jay RamFounder/CEO
Lorenss MartinsonsFounder
Parth PatelFounder/CTO

About HUD

HUD is the platform for building high quality post training datasets. Over 50 businesses use HUD to build RL environments, sell them to AI labs, or train their own models from them. Our mission is to enable a generation of data entrepreneurs. The previous generation built apps to impact the world. We believe people will build infrastructure around data, both digital and physical, that align AIs to their specific goals.

YC batch: W25 · Winter 2025
Status, per YC: Active
Category: AI, Developer tools
Team size: 24
Location: San Francisco, CA, USA
Founded: 2025
Checked: 6h ago

YC tags: Marketplace, Reinforcement Learning, B2B, AI