OutputMessageItem - Python SDK

OutputMessageItem method reference

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An output message item

Fields

FieldTypeRequiredDescription
contentList[components.OutputMessageItemContent]✔️N/A
idstr✔️N/A
phaseOptionalNullable[components.OutputMessageItemPhaseUnion]The phase of an assistant message. Use commentary for an intermediate assistant message and final_answer for the final assistant message. For follow-up requests with models like gpt-5.3-codex and later, preserve and resend phase on all assistant messages. Omitting it can degrade performance. Not used for user messages.
rolecomponents.OutputMessageItemRole✔️N/A
statusOptional[components.OutputMessageItemStatusUnion]N/A
typecomponents.OutputMessageItemType✔️N/A