OpenAI details storage overhaul that cut global read latency 12x to ~10ms

OpenAIDevs · x · 2026-10-24

OpenAI's dev team explains how it serves data in milliseconds to over 1.2 billion users across 40 regions, working with Azure Cosmos DB to achieve a 12x improvement in global median read latency through caching, replication, and a Rust rewrite.

Related event: OpenAI Cuts Global Read Latency from 120ms to 10ms(2 posts)→

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