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Idler

Scale AI for reinforcement learning environments.

Idler builds reinforcement learning environments that teach AI models to code at expert human levels. We create training environments based on real-world coding scenarios that prepare models for the complex challenges they'll face in production.
Active Founders
Ivan Chub
Ivan Chub
Founder
Idler. Previously cofounder of Dark Forest, 0xPARC, Zupass, Hack Lodge; also previously at Facebook, Dynasty, AppSheet.
Nalu Concepcion
Nalu Concepcion
Founder
currently: building RL environments. formerly: orchestrated 500+ person parties, monthly @ notsominimoments · eng @ msft · fellow @ notable capital · product @ poshmark · ds @ paymongo cornell computer science + operations research & information engineering. DM's especially open to book / movie / song recs.
Tony Goss
Tony Goss
Founder
Dark Forest, Zupass, US Census Bureau. Pro ultimate player, state champion coach, and Dominion nerd
YC Photos
Jobs at Idler
San Francisco
$180K - $220K
0.25% - 1.00%
3+ years
San Francisco
$100K - $120K
0.05% - 0.25%
Any (new grads ok)
Idler
Founded:2025
Batch:Summer 2025
Team Size:3
Status:
Active
Primary Partner:Harj Taggar