
SE3 Labs
SE3 Labs is a YC Fall 2026 (F26) company. Based in San Francisco, CA, USA. Team of 3.
About SE3 Labs
Summary
SE3 Labs builds real-world reinforcement learning infrastructure for robotics teams. It deploys client policies across a distributed fleet of standardized robot workcells, runs evaluations in controlled labs and factory environments, and converts the resulting rollouts, including failure events and operator corrections, into annotated training datasets. This replaces the need for robotics teams to build, staff, and operate their own physical testing and data-collection infrastructure.
Go-to-market
Robotics and physical AI teams are the buyers, starting from industry partner engagements where SE3 Labs runs policy evaluations and curates training data on their behalf.
From the Y Combinator listing
Real-World RL Environments for Physical AI
We build real-world RL environments for robots. Starting with tasks from industry partners, we test policies on real robots and identify where they fail. We use those failures to decide what data to collect and curate for the next policy update. Next, we're setting up physical sandboxes at partner sites, so policies can train on the exact tasks and conditions they'll face in deployment.
Facts
- B2B / B2B
- San Francisco, CA, USA
- 3
- Active
- Growth
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