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idler (YC S25) — Hill-climb any benchmark, for any model, in any domain

idler is a frontier data research lab. We build the evals and environments that the world's leading frontier labs use to measure and train their models.

idler is a Y Combinator company in the Summer 2025 batch. Its directory entry describes it as: Hill-climb any benchmark, for any model, in any domain. The founders listed are Ivan Chub (Founder/CEO), Nalu Concepcion (Founder), Tony Goss (Founder) (Y Combinator directory entry, June 12, 2025).

6 more companies from YC Summer 2025 ↓

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idler

New accelerator entry · 2025-06-12 · the record

Summer 2025
batch
12
people
Early
stage
United States of America
region
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What the record says

BatchSummer 2025
Announced2025-06-12
StageEarly
StatusActive
Team size12
IndustryB2B
Sub-industryB2B -> Engineering, Product and Design
SectorsReinforcement Learning
RegionsUnited States of America, America / Canada
BasedSan Francisco, CA, USA
HiringYes
Sitehttps://idler.ai/
Previously known asIdler

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Also in YC Summer 2025

Same batch, B2B first.

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In their words

idler is a frontier data research lab. We build the evals and environments that the world's leading frontier labs use to measure and train their models.

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  8. Sources

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idler: Accepted into Y Combinator Summer 2025
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Permanent URL: https://mentionfox.com/funding/yc-idler
Last updated 2026-10-20
Primary record: Y Combinator directory entry
idler (YC S25) — Hill-climb any benchmark, for any model, in any domain. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-idler