OpenAI AI Updates: September 12, 2026

1. OpenAI Detailed How Habitat Grew From a Python Library Into a 22M-Requests-Per-Second Storage Platform

OpenAI published the first part of an engineering write-up on Habitat, the online storage system behind ChatGPT, tracing its path from an internal Python library to a globally distributed platform serving over 1 billion users at 22 million requests per second. It is one of the few first-party accounts of what the storage tier under a frontier chat product actually looks like at that scale, which makes it worth reading even if you will never operate anything close to it. Source

2. Cognition Put GPT-6 Astra Behind Devin’s Self-Verification Step

OpenAI described how Cognition uses GPT-6 Astra to improve Devin’s ability to test its own output and demonstrate that the work is correct, with the stated goal of having engineers review less code while shipping more. The framing is notable: the model is being applied to the verification half of the agentic coding loop rather than the generation half, which is where most of the reliability complaints land. Source

3. The ChatGPT Desktop App Got Quick Chat From Pets, and Appshots Landed on Windows

The Codex changelog shipped Quick Chat in the floating Pets controls on macOS and Windows, letting users type a prompt without leaving the app they are working in, with @ for context and $ to pick a skill. Appshots, which share the frontmost app window plus its available text with ChatGPT, are now available on Windows via a double-Alt shortcut. Smaller changes include opening or downloading files straight from a conversation’s Sources panel and binding a Codex Micro key to insert reusable text into the active prompt without sending it. Source