# ChatStreamingMessageChunk


## Fields

| Field                                                                                                | Type                                                                                                 | Required                                                                                             | Description                                                                                          |
| ---------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------- |
| `role`                                                                                               | [Optional[components.ChatStreamingMessageChunkRole]](../components/chatstreamingmessagechunkrole.md) | :heavy_minus_sign:                                                                                   | N/A                                                                                                  |
| `content`                                                                                            | *OptionalNullable[str]*                                                                              | :heavy_minus_sign:                                                                                   | N/A                                                                                                  |
| `reasoning`                                                                                          | *OptionalNullable[str]*                                                                              | :heavy_minus_sign:                                                                                   | N/A                                                                                                  |
| `refusal`                                                                                            | *OptionalNullable[str]*                                                                              | :heavy_minus_sign:                                                                                   | N/A                                                                                                  |
| `tool_calls`                                                                                         | List[[components.ChatStreamingMessageToolCall](../components/chatstreamingmessagetoolcall.md)]       | :heavy_minus_sign:                                                                                   | N/A                                                                                                  |
| `reasoning_details`                                                                                  | List[[components.Schema19](../components/schema19.md)]                                               | :heavy_minus_sign:                                                                                   | N/A                                                                                                  |