Model board / GPT-6 Luna · Decisions API

Verified 2026-10-08 against the pages listed below. Prices are USD per 1M tokens, list rate — no committed-use, enterprise or volume discount.

the /v1/decisions rate for gpt-6-luna: input only, with no cache-read, cache-write or output charge; regional-processing premiums and long-context input multipliers still apply. Other gpt-6-luna requests bill at the GPT-6 Luna row's rates. Public beta from 2026-10-06

the Decisions guide does not state a per-request input limit for /v1/decisions

the Decisions guide states there are no cache-read or cache-write charges

Watch out

Beta, with GPT-6 Luna the only model. At $0.10 per 1M input it is two and a half times Jev and five times Perplexity's Decider; OpenAI's "10x faster than the Responses API" is its own measurement. Images must be inline base64

What we would use it for

Typed answers — predicate, choice, score — over text and images from a frontier lab's own endpoint, with ZDR and HIPAA for eligible customers

What this has cost, week by week

Output price at each refresh since 2026-10-08. A vendor change is the provider changing its price. Our correction means this board changed what it prints and the provider's charge did not move — the two are never merged, because publishing the second as the first would be a price rise that never happened.

Nothing has moved since we started tracking it.

Where these numbers came from

• https://developers.openai.com/api/docs/guides/decisions
• https://developers.openai.com/api/docs/changelog

No number on this page was written that was not read from one of those pages on 2026-10-08. If one is wrong, send us the source URL and it is corrected in the next weekly refresh, with a changelog line saying what was wrong — contact@naderu.com.

Jobs this is one of our picks for

• Typed decisions (Jev-class) — State in, a calibrated choice out — no text generated (typed-decisions)

The rest of the board

This row sits alongside 69 others on the model board, refreshed every week. The same data as JSON, and the terms for using it, are at /board-data.