llm-openai-decisions 0.1a0

6th October 2026

OpenAI released their new Jev-style Decisions API, as previously announced at last week's DevDay.

Since I already have an llm-typesafe plugin for talking to Jev, I had GPT-6 Astra read the new OpenAI API documentation and build an llm-openai-decisions plugin inspired by llm-typesafe.

Unlike Jev, the new gpt-6-luna decision model supports image input in addition to text. Both models charge for input it and not for output: OpenAI's is 10 cents per million input tokens, Jev's is 4.2 cents per million.

Otherwise the API shape is very similar to Jev, at least conceptually. Jev supports three question types for yes/no, choices, or scores. OpenAI Decisions supports the same three types.

Install the plugin like this:

llm install llm-openai-decisions

Here's an example query against an image attachment:

llm -m openai-decisions/gpt-6-luna \

-a https://static.simonwillison.net/static/2025/two-pelicans.jpg \

-s 'Does this image contain any mammals?'And example output:

{"type": "predicate", "name": "evaluation", "probability": 0.0}Consult the README for full details of how to run the other types of questions.

Recent articles

- We're going to need default hard budget caps on pretty much everything - 3rd October 2026

- OpenAI DevDay 2026 live blog - 29th September 2026

- 2026 in LLMs (so far) - 27th September 2026