CommunityJev Guides & Articles
OpenAI answers TypeSafe's Jev with a Decision API built on Luna — thenewstack.io
The New Stack reports OpenAI's limited-preview Decisions API on GPT-6 Luna: predefined answers with confidence scores in about 150 ms, framed as a response to Jev's decision-model wave.
- Format
- Article
- Published by
- Community
- Author
- Frederic Lardinois
- Last verified
- Oct 2026
This is one of several Jev listings for the same project. The canonical entry is OpenAI Answers TypeSafe's Jev with a Decision API Built on Luna — news.ycombinator.com.
Used inJev for Software & DevTools
Highlights
- Published September 29, 2026 alongside DevDay coverage of a non-chat API that returns structured choices instead of prose.
- Contrasts Luna decision latency with full chat calls and situates the API between prompt-only classifiers and retrained small models.
- Pricing, label limits, and fine-tuning details were still undisclosed at publication.
Watch out
Industry news, not a benchmark; treat OpenAI's speed figure as a vendor claim until reproducible.
Questions about this entry
Short answers drawn from the linked project or page.
A vendor claim. It comes from the API's own launch framing rather than an independent benchmark, and the piece is filed as industry news, not an evaluation. No tested latency distribution or hardware is reported.
Unknown. Pricing, label limits, and any fine-tuning details were all still undisclosed, so you cannot yet cost a per-decision budget or know whether wide menus get throttled. Check current docs before designing around it.
The article places it between prompt-only classifiers and retrained small models, which implies training rather than pure prompting, though it does not confirm the regime. It also retains image understanding and safety protections.
Start on Jev now. This was a limited preview with sparse third-party testing, so there is nothing to migrate to yet. Jev has public docs and community evals you can read, so re-check the Luna API later rather than waiting.
Frederic Lardinois wrote it for The New Stack, published September 29, 2026 alongside the site's DevDay coverage. It is industry news about a non-chat API that returns structured choices instead of prose, not an independent benchmark.
The article says the API retains image understanding and safety protections, and places it between prompt-only classifiers and retrained small models. That implies training rather than pure prompting, though the piece does not confirm the regime.
It is built on GPT-6 Luna, per the headline and the entry description. It is a limited preview that returns predefined answers with confidence scores in about 150 ms, and is framed as a response to the Jev decision-model wave.
Reactions & coverage
Posts, threads, and videos about this entry from around the web.
Hacker News: OpenAI's Luna Decisions API framed as a fast follow to TypeSafe's Jev wave.
matt_d6 pointsOpenAI Answers TypeSafe's Jev with a Decision API Built on LunaRead the thread on Hacker NewsMore Jev resources like this
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