Polymath
ActiveAI-nativeSimulation environments to train & evaluate long-horizon AI agents
What it does
Polymath is a data lab focused on improving long-horizon agent capabilities and alignment
Next to it in Agent infrastructure · Simulation environments for agent training
- Ooak DataY Combinator S26
We turn company data into training data
- VerisPlug and Play PnP 2026
Veris is a sandbox platform that lets enterprises train and validate autonomous agents in realistic, high-fidelity simulations before deployment.
- Ressl AIY Combinator W26
Train, eval and build autonomous agents
- Arga LabsY Combinator X26
Real-world sandboxes to test and train AI agents
- hiloopY Combinator S26
Infrastructure for recursive self-improvement
- MangoDeskY Combinator S25
Long-horizon RL environments
- AviroY Combinator X25
Environments for Long Horizon Tool Use
- RefreshY Combinator X25
Training gyms for computer use and software engineering work