YC Reinforcement Learning
43 Y Combinator companies tagged Reinforcement Learning, most in S26 (14).
Companies per batch
Companies
43 of 43 companies
CoArenaS26 · AIThe biggest crowdsourced benchmark for Computer-Use
CueBenchS26 · AIRL post-training for science reasoning and performance engineering
EdotEnvS26 · AIQuant Neolab building self-improving agents from quant data
EnactS26 · AIReal-world RL environments for robotics models
Experiential LabsS26 · AIOpen source AI gateway that turns your traffic into better models
FabraixS26 · AIThe world's frontier hacker of AI agents.
hiloopS26 · AIAutoresearch as a service: we solve your hardest measurable problems
MagmaS26 · AIMonetize your agent's traces.
MarkovS26 · AIExpert computer-use data for frontier AI labs
Olam LabsS26 · AIBuilding multi-agent simulations for model evals and training.
Ooak DataS26 · AIWe turn company data into training data
Praxis RoboticsS26 · AITurns real businesses into robotics data vendors
Prodigy ResearchS26 · AITraining the world's best AI model for quantitative finance.
RiftenS26 · AIEarned intelligence for every company
AnchorheadW26 · AIEvals for frontier research agents
AshrW26 · AIEnterprise post-training, monitoring, and continual learning platform
Brumby (Formerly GrazeMate)W26 · AIRobot Cowboys that Herd Cattle with AI Drones
TraverseW26 · AIResearch lab solving non-verifiable work
Cortex AIF25 · AILarge-scale real-world robot & human data for embodied AI
hillclimbF25 · AITraining Data for Recursive Self-Improvement
SylvianF25 · InactiveSpecialized AI Agents.
idlerS25 · AIHill-climb any benchmark, for any model, in any domain.
MonteS25 · AIContinual Learning for Agents
NuntiusS25 · InactiveMaking Models Follow Rules.
TopologicalS25 · AIPhysics-based foundation models for CAD optimization.
AviroX25 · AIEnvironments for Long Horizon Work
CartpoleX25 · AIBuilding reinforcement learning environments
FreesoloX25 · AIProduct Native Models
KairosX25 · AISpecialized AI for Critical Industries
ThetaX25 · AISpecialized AI for Every Job
Agentin AIW25 · AIAI Agents that automate enterprise software processes
HUDW25 · AIPlatform for building RL environments and evals
OsmosisW25 · AIReinforcement Learning (RL) for AI Agents
TrainLoopW25 · AIReasoning Fine-Tuning
SynthF24 · AIPrompt and Context Optimization for Coding Agents
Sepal AIS24 · AcquiredData Development for Advanced AI
JustAIW24 · AIAgentic Marketing Platform
ResonanceW24 · AcquiredSelf-improving content bank for marketing
Vibrant LabsW24 · AIAutonomously scaling environments
UnifyW23 · AIModels that keep learning
VelosW23 · AIPlatform to automate manual back-office work
rct AIW19 · AIbuild AI NPCs
PathmindW16 · InactivePathmind helps industrial engineers and simulation modelers achieve…Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.