OpenAI's second post on scaling 'Habitat,' the storage behind ChatGPT's 1 billion users: Azure Cosmos DB and global caching make reads 12x faster
Announced October 23, 2026
Verified (fact)
OpenAI published a second post on how it scaled 'Habitat,' ChatGPT's online storage system. It explains that stable multi-tenancy, global caching, and Azure Cosmos DB made ChatGPT reads 12x faster.
Needs fact-check (claim)
OpenAI said read speeds became 12x faster. Measurement conditions are not in the excerpt.
Why it matters (interpretation)
It is a rare public look at how the storage layer of an AI service at the 1-billion-user scale was designed, and a useful reference for teams running large-scale LLM services.
Sources
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