Idler

LinkedIn · Jul 2026

Ivan Chub’s LinkedIn profile identifies him as Founder & CEO of Idler and links the company to a 10-20 employee, San Francisco-based operation with $500K funding.

LinkedIn · Jan 2026

A post from a new hire describes working in the Idler office, team dinners, and the company culture, supporting the in-person, high-intensity environment.

LinkedIn · Aug 2025

Tony Goss says Idler is building reinforcement learning environments and frames the company’s origin story and YC S25 participation.

Y Combinator

YC describes Idler as building reinforcement learning environments that teach AI models to code at expert-human levels; the profile also lists the 2025 founding year, San Francisco HQ, and founders.

Y Combinator

The jobs page says Idler closed a multimillion-dollar contract with a leading foundation lab and is scaling quickly to build the training data layer for frontier AI.