YCW25· AI· DevtoolsHUD
Platform for building RL environments and evals
Founders
- Jay RamFounder/CEO
- Lorenss MartinsonsFounder
- Parth PatelFounder/CTO
Same space
Competitors
Closest in what they build, same category.
Vibrant LabsW24Autonomously scaling environmentsShared: reinforcement learningActive
AviroX25Environments for Long Horizon WorkShared: reinforcement learningActive
idlerS25Hill-climb any benchmark, for any model, in any domain.Shared: reinforcement learningActive
AnchorheadW26Evals for frontier research agentsShared: reinforcement learningActive
hillclimbF25Training Data for Recursive Self-ImprovementShared: reinforcement learningActive
Adjacent
Overlapping tags, a different niche.
Olam LabsS26Building multi-agent simulations for model evals and training.Shared: reinforcement learningActive
EnactS26Real-world RL environments for robotics modelsShared: reinforcement learningActive
CueBenchS26RL post-training for science reasoning and performance engineeringShared: reinforcement learningActive
CartpoleX25Building reinforcement learning environmentsShared: reinforcement learningActive
Ooak DataS26We turn company data into training dataShared: reinforcement learningActive
Also from W25 in AI
Batchmates in Winter 2025.
Agentin AIW25AI Agents that automate enterprise software processesActive
OsmosisW25Reinforcement Learning (RL) for AI AgentsActive
TrainLoopW25Reasoning Fine-TuningActive
.WaveW25Continuous inference for streaming AI modelsActive
10xW25AI Sales Teams for Dental PracticesActive
a0.devW25We make mobile apps using AI.Active
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.
San Francisco, CA, USA
HUD: questions
Which YC batch was HUD in?
HUD was in Y Combinator's Winter 2025 batch (W25).
Is HUD still active?
Y Combinator lists HUD as active.
Who founded HUD?
HUD's founders, as listed on its YC page: Jay Ram (Founder/CEO), Lorenss Martinsons (Founder), Parth Patel (Founder/CTO).
Where is HUD based?
HUD lists San Francisco, CA, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.