# ChatCompletionChunk

Streaming chat completion chunk


## Fields

| Field                                                                            | Type                                                                             | Required                                                                         | Description                                                                      |
| -------------------------------------------------------------------------------- | -------------------------------------------------------------------------------- | -------------------------------------------------------------------------------- | -------------------------------------------------------------------------------- |
| `id`                                                                             | *str*                                                                            | :heavy_check_mark:                                                               | N/A                                                                              |
| `choices`                                                                        | List[[models.ChatCompletionChunkChoice](../models/chatcompletionchunkchoice.md)] | :heavy_check_mark:                                                               | N/A                                                                              |
| `created`                                                                        | *float*                                                                          | :heavy_check_mark:                                                               | N/A                                                                              |
| `model`                                                                          | *str*                                                                            | :heavy_check_mark:                                                               | N/A                                                                              |
| `object`                                                                         | [models.ChatCompletionChunkObject](../models/chatcompletionchunkobject.md)       | :heavy_check_mark:                                                               | N/A                                                                              |
| `system_fingerprint`                                                             | *OptionalNullable[str]*                                                          | :heavy_minus_sign:                                                               | N/A                                                                              |
| `usage`                                                                          | [Optional[models.CompletionUsage]](../models/completionusage.md)                 | :heavy_minus_sign:                                                               | Token usage statistics                                                           |