OpenAI built a new Git backend to keep up with Codex-driven code volume

OpenAI says Codex let its engineers run far more work in parallel, and by around the end of last year its monorepo systems were struggling, with slow fetches and pushes, failed merges and reliability at times below 90%. It built Pando, a backend that still speaks standard Git, so engineers and agents kept their usual workflow; it handles pushes to different branches independently and serves cached, reusable packfiles to readers. OpenAI reports that median push latency fell by nearly 80% and that Pando now delivers nearly a petabyte of Git data a day. It went from kick-off to production in 10 weeks, with the core designed by one engineer and built by teams of agents, and OpenAI says it is exploring ways to share the technology with users. Sorted take: more agents means more branches, pushes and CI runs, and your tooling has to absorb that load.