Emitted when a delta is added to a reasoning summary text.

interface ResponseReasoningSummaryTextDeltaEvent {
    delta: string;
    item_id: string;
    output_index: number;
    summary_index: number;
    type: "response.reasoning_summary_text.delta";
}

Properties

delta: string

The text delta that was added to the summary.

item_id: string

The ID of the item this summary text delta is associated with.

output_index: number

The index of the output item this summary text delta is associated with.

summary_index: number

The index of the summary part within the reasoning summary.

type: "response.reasoning_summary_text.delta"

The type of the event. Always response.reasoning_summary_text.delta.