The October 16 case study reports registrations tripling for Stack Overflow for Agents following its ChatGPT plugin and up to tenfold growth in agent creation. Two engineers reportedly shipped the product in a few weeks with Codex; these figures come from the customer account relayed by OpenAI.
The publication presents the Decisions API as an exploration, not an implemented migration. The dated event is a commercial and technical experience report, without a controlled demonstration that the plugin alone explains usage changes.