Education

One Month

Website
Founded 2013Origin source ↗Checked 2026-09-15

Overview

One Month is an accelerated learning platform.

Our goal is simple -- empower people to change their lives by learning real-world skills, in a short amount of time. The One Month team is comprised of education thought-leaders and self-taught technology experts working to build the most effective way to learn online.

Company description As recorded 2026-11-08
GitHub About
EducationContent mediaConsumersConsumerSubscription

Founders & team

Mattan Griffel

Founder/CEO

Mattan is an award-winning faculty member at Columbia Business School and a two-time Y Combinator-backed entrepreneur. He co-founded Ophelia, a company that helps people quit opioids without having to go to rehab. Mattan is also an Innovation Fellow at the Lang Center for Entrepreneurship at Columbia Business School and was selected as one of Forbes' 30 Under 30 in Education. I studied Philosophy and Finance at New York University and wrote my thesis on the metaphysics of consciousness.

LinkedIn X
Founder profile As recorded 2026-09-15

Chris Castiglione

Founder

Co-founder of Console.xyz. Adjunct Professor at Columbia Business School.

X
Founder profile As recorded 2026-09-15
1team members reported
Source-reported As recorded 2026-09-15

Founded 2013 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthenriched profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedNew York City, NY, USA; New York, NY, USA; Remote
Pricing evidenceA pricing page was detected
Maturity: Not assessed · 4 of 6 areas documented

Source-based assessment · automated evidence rules

The source reports an inactive or acquired company; current product identity needs review.

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.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding yearpricing page observed
startup.observe Directory coverage · Sources & method