OpenAI Launches Pando: Custom Git Backend Cuts Monorepo Push Latency by ~80%

OpenAI has open-sourced details on Pando, a custom Git backend built to handle the scale of its massive monorepo, reducing median push latency by approximately 80%. Standard Git tooling struggled under the weight of OpenAI's codebase size, prompting the team to build a purpose-designed backend that offloads object storage and indexing. Pando decouples the Git protocol layer from storage, enabling horizontal scaling and faster ref resolution across thousands of daily contributors. For developers and platform engineers managing large AI codebases or monorepos, Pando's architecture offers a concrete reference for scaling version control without abandoning Git workflows. The technical write-up provides implementation detail relevant to any engineering team hitting Git performance walls at scale.