> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# OpenResponsesStreamEventResponseOutputItemAdded - Python SDK

> OpenResponsesStreamEventResponseOutputItemAdded method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

Event emitted when a new output item is added to the response

## Fields

| Field             | Type                                                                                                 | Required             | Description                      | Example                                                                                                                                                                        |
| ----------------- | ---------------------------------------------------------------------------------------------------- | -------------------- | -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `type`            | [components.TypeResponseOutputItemAdded](/client-sdks/python/components/typeresponseoutputitemadded) | :heavy\_check\_mark: | N/A                              |                                                                                                                                                                                |
| `output_index`    | *float*                                                                                              | :heavy\_check\_mark: | N/A                              |                                                                                                                                                                                |
| `item`            | [components.ResponsesOutputItem](/client-sdks/python/components/responsesoutputitem)                 | :heavy\_check\_mark: | An output item from the response | `{"id": "msg-abc123","role": "assistant","type": "message","status": "completed","content": [{"type": "output_text","text": "Hello! How can I help you today?"}`<br />]<br />} |
| `sequence_number` | *float*                                                                                              | :heavy\_check\_mark: | N/A                              |                                                                                                                                                                                |