Sales & marketing

Fabius

Website

Fabius helps sales leaders understand and improve their reps' performance by analyzing customer calls with AI. Companies like Airbyte and Fermat use us to score every call and identify when a customer hasn’t been properly qualified. Fabius helps drive decisions within sales, including: - Disqualify a deal: Reps work on deals that will never clo

Founded 2020Origin source ↗Checked 2026-11-03

Overview

Fabius helps sales leaders understand and improve their reps' performance by analyzing customer calls with AI. Companies like Airbyte and Fermat use us to score every call and identify when a customer hasn’t been properly qualified.

Fabius helps drive decisions within sales, including:

- Disqualify a deal: Reps work on deals that will never close. We identify the deals that won't be successful and make sure reps don't waste time on them.

- Need to strengthen the business case for a deal: We tell managers and reps when a deal has a weak business case and show them how to uncover more business value in the deal.

Company description As recorded 2026-11-08

Founders & team

Previously Fabius Technologies, Inc.

Company history As recorded 2026-11-08

Neil Madsen

Founder

Neil is the CEO of Fabius. Before co-founding Fabius, Neil was the Head of Technical Services at LiveRamp, where he led all technical customer-facing teams (Sales Engineering, Implementation, Technical Account Management, and Support). He has a BS in Computer Science from The Ohio State University.

Founder profile As recorded 2026-11-03

Andy Day

Founder

AI Engineer at Ode with Anthropic. Previously Co-Founder and CTO of Fabius (W23), lead the Pixel Serving Engineering Team @ LiveRamp, etc.

Founder profile As recorded 2026-11-03
2team members reported
Source-reported As recorded 2026-11-03

Founded 2020 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite unreachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 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 corroborationdescriptive evidenceclassified market and modelsourced peoplesourced founding year