Business

Epsilab

Website
Founded 2026Origin source ↗Checked 2026-10-26

Overview

Applied AI research lab focused on RL for frontier model training. Our research and evals cover real-world environment simulation, long-horizon workflows, and multi-player agents, etc.

Company description As recorded 2026-11-08
LinkedIn

Founders & team

Matthew Olsen

Founder

Founder at Epsilab - building RL environments for training agents on real workflows and ultra-long-horizon tasks.

LinkedIn X
Founder profile As recorded 2026-10-26

Fengjiao Peng

Founder

Cofounder at Epsilab. Previously co-founded Shortbread (YC W23), generating $500K revenue and 2M episodes sold for AI-created comics. ML Researcher at MIT Media Lab.

LinkedIn
Founder profile As recorded 2026-10-26
4team members reported
Source-reported As recorded 2026-10-26

Founded 2026 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 2 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

  • Product overviewSource description Checked 2026-11-11
  • Product visualsNot documented
  • Founders & originsTeam information
  • Business model & pricingNot documented
  • Funding & ownershipNot documented
  • Dated milestonesNot documented
Stage definitions
independent websitesource corroborationreachable websitedescriptive evidencesourced peoplesourced founding year
startup.observe Directory coverage · Sources & method