OpenAI published technical deep-dive on Habitat's architecture and growth
Following·New·first covered 11 Sep 2026·2 sources
OpenAI Details Habitat Storage Platform's Rust Rewrite and Scale
The gist
Habitat underpins OpenAI's core products including ChatGPT and Codex at significant scale. The rewrite illustrates a concrete case where OpenAI used its own AI coding tools to complete a major infrastructure migration with a two-engineer team.
The full picture
OpenAI published a technical deep-dive on Habitat, its internal online storage platform, describing a system that now handles 70 million requests per second across 500 petabytes of data. Habitat began as a Python client-side library in mid-2024 and grew into a distributed service powering ChatGPT and Codex. In Q2 2026, two engineers rewrote the entire service in Rust using Codex and GPT-5.5, achieving 6x CPU efficiency and 15x memory efficiency over the Python version; the Rust service now handles 95% of production traffic. OpenAI said the platform has grown more than 10x year-over-year for three consecutive years, and the Python version previously handled over 20 million requests per second at peak before the rewrite.
How it developed
Sources
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