OpenAI Decisions API
Typed answers with probabilities for yes/no checks, fixed choices and rubric scores
The Decisions API is OpenAI's endpoint for questions with a fixed set of answers. You send text, images or both with predicate, choice or score questions to POST /v1/decisions. It returns probabilities instead of generated text. gpt-6-luna is the only model so far.
It is in public beta, with general availability expected in the coming weeks. Images must be sent inline as base64. Zero data retention and HIPAA are available to eligible customers, with data residency in the US and Europe.
Priced at $0.10 per 1M input tokens, with no output or cache charges.
Pricing: Per token usage
OpenAI Decisions API prices by model
Per 1M tokens, read off OpenAI Decisions API's own pricing page on the date shown.
| Model | Input / 1M | Cached / 1M | Output / 1M | Checked | Notes |
|---|---|---|---|---|---|
| OpenAI Decisions (gpt-6-luna) | $0.10 | – | $0.00 | 15 Oct 2026 | Public beta. No output or cache charges. |
Resources
OpenAI Decisions API Alternatives
Explore 147 products in the Inference APIs category. View all OpenAI Decisions API alternatives.
Kev
Open decision models from 0.8B to 27B, built on Qwen and compatible with TypeSafe's Jev API.
Laya
Open-source multilingual decision model: typed choices, scores and yes/no answers in one forward pass.
Microsoft-Decision-1
Microsoft's decision model on Foundry: typed scores and yes/no answers with probabilities instead of text
Upstage Solar Decide
Upstage decision model on Solar Mini 4: choices, scores and yes/no answers with probabilities, Jev-compatible
Inception Mercury Decide
Inception's decision model: yes/no probabilities, categorical choices and ordinal scores over text, JSON and images
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