ReasoningItem

@Serializable

class ReasoningItem(val content: List<ResponseContentPart> = emptyList(), val id: String? = null, val status: ResponseStatus? = null) : ResponseItem

The chain-of-thought a thinking model produced before its answer.

Comes back ahead of the MessageItem in ModelResponse.output, and is accepted on input so an earlier turn's reasoning can be replayed.

Constructors

constructor(content: List<ResponseContentPart> = emptyList(), id: String? = null, status: ResponseStatus? = null)

constructor(text: String, id: String? = null, status: ResponseStatus? = null)

Creates a reasoning item from plain chain-of-thought text.

Parts carrying the reasoning, in practice ReasoningTextParts.

Identifier the API assigned to the item; null on an item the caller built.

Generation state of the item; null on an item the caller built.

The reasoning text of every TextContentPart in content, concatenated in order.

open override val type: String

Raw type discriminator of the item.

open operator override fun equals(other: Any?): Boolean

open override fun hashCode(): Int

open override fun toString(): String