An internal agent built on GPT-5.2 that OpenAI disclosed in January 2026, used to help make engineering, product and research decisions across roughly 600 petabytes of company data. In this corpus it marks the point at which a frontier lab’s own model sits inside the lab’s decision loop (development), three days before a Codex manager said the product now builds itself.
AISystem
OpenAI in-house data agent
OpenAI's internal GPT-5.2-based agent that operates over the company's 600 petabytes of data to inform engineering, product and research decisions.
Sources
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- Welcome to January 31, 2026 (theinnermostloop.substack.com)
Development timeline
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