Multi - Krun

Upcoming. The multi question type ships with Krun One V1 and is not yet available on api.krun.ai. Until it is, ask one noul question per label.

A multi question selects every option that applies to the context. Each option gets its own probability. It works with text and with multimodal inputs.

Example

{
  "context": "Invoice #4471, due 2026-08-01. Payment reminder: this invoice is 30 days overdue.",
  "questions": {
    "tags": {
      "type": "multi",
      "instructions": "Select every label that applies to the document.",
      "options": {"invoice": null, "receipt": null, "overdue": null}
    }
  }
}

The answer has the selected option ids and a probability per option (values below are illustrative):

{
  "tags": {
    "type": "multi",
    "values": ["invoice", "overdue"],
    "probabilities": {"invoice": 0.97, "receipt": 0.04, "overdue": 0.93}
  }
}

Question fields

Field	Required	Description
`type`	Yes	`"multi"`
`options`	Yes	Map of option id to description, 2 to 64 options. Use `""` or `null` for label-only options.
`instructions`	No	What to select, 1 to 1,000 characters, for example “Select every element present in the document”.

Answer fields

Field	Description
`type`	`"multi"`
`values`	The option ids that apply, in request order. Can be empty.
`probabilities`	Probability that each option applies, in [0, 1], in request order.

The probabilities are independent: they don’t sum to 1. Several options can be close to 1, or none can. To use your own threshold instead of values, read probabilities directly.

Multi, choice or noul

Exactly one option applies: choice.
Any number of options can apply: multi.
A single yes/no proposition: noul.

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