What is the OpenAI Batch API | How to use asynchronous processing for 50% lower costs and pricing

The OpenAI Batch API is a mechanism for submitting requests that do not require an immediate response in a single file and receiving the results later via a file. The official guide explains at the ...

[Breaking] To those getting a "401 Incorrect API key" error in Codex. It is likely an OpenAI-side outage, not a configuration error (as of 8:40 AM, 9/26)

AM on Saturday, September 26, 2026.[Update 9/26 9:40] It was restored at 8:54 AM.The official OpenAI page now says "all ...