Fondo · Feb 2026
Launch recap highlighting the product’s human-reviewed extraction, Excel integration, and early performance claims.
AI + human review to solve data cleaning - accessible via API or Excel
Company research
Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
sieve is a New York-based, Y Combinator-backed AI data extraction and cleaning platform for hedge funds and investment firms. It combines AI-led extraction with human review to turn websites, PDFs, filings, images, and other messy sources into analysis-ready data, delivered through an API and Excel add-in.
Primary product
AI + human-in-the-loop data extraction and cleaning platform with API and Excel add-in
Founded
2025
Headquarters
New York, New York, United States
Team size
1-10
Industry
Technology, Information and Internet
Sub-industry
AI data extraction / data cleaning
Business model
usage-based API