OpenAI Opens Decisions API to All, Heating Up Decision-Model Race
OpenAI Pushes Its Decision Model to Every Developer
On October 22, OpenAI announced that its Decisions API is now generally available to all customers, expanding the GPT-6 Luna-based bounded-decision capability from limited preview into a production-ready product. The launch marks OpenAI's formal entry into the fast, cheap decision-model market that TypeSafe's Jev helped create.
Repurposing Luna Into a Decision Engine
OpenAI product lead Nikunj Handa told TechCrunch the team reconfigured ChatGPT Luna to accelerate inference and cut cost. Response times fell from one to three seconds to roughly 100, 120, or 180 milliseconds depending on the request, and OpenAI claims up to 10x faster responses than the Responses API. The API accepts text, images, and structured input, and each request can now carry up to 400 questions, double the public beta limit.
Three Weeks After Debut, Now Fully Open
The Decisions API debuted at OpenAI's September 29 developer day and opened as a public beta on October 6. Ahead of general availability, OpenAI added native GPT-Live integration, prompt caching, JSON input support, and inference in both the US and EU, plus added capacity in multiple Asian regions to further cut latency. At general availability, output stays free and caching moves to Luna's standard rates, with regional processing premiums and long-context multipliers still applying. Handa said customers want the API to be more flexible about using images as outputs, and that Luna is "extremely powerful and has been showing better calibrations" for image classification.
