# OpenAI Builds Pando Git Backend for Concurrent Monorepo Development

By Simon Yoon

Canonical URL: https://www.tokenpost.com/news/technology/47239
Published: 2026-11-03T03:40:00.000Z
Updated: 2026-11-03T03:40:00.000Z
Section: Technology

> Pando lets writes to unrelated refs proceed independently and consolidates small packfiles into larger covers, which the system has used through L4.

OpenAI built Pando, a Git-compatible backend designed to support concurrent development in its monorepo without changing engineers’ Git workflows.

Writes to unrelated refs can proceed independently. An atomic compare-and-swap-like operation guards updates to each ref pointer, and the backend is designed for high-throughput reads.

Pando also consolidates small packfiles into larger cover structures in background jobs. The process follows a log-structured merge-tree model, and the system has used covers through L4.