Rapidly scaling online storage to serve over 1 billion ChatGPT users (Part II) Rapidly scaling online storage to serve over 1 billion ChatGPT users (Part II) openai.com/ai 2026-10-23 1 min read original #engineering Learn how OpenAI scaled Habitat with reliable multi-tenancy, global caching, and Azure Cosmos DB to deliver 12× faster reads for ChatGPT.