Represents a streamed chunk of a chat completion response returned by model, based on the provided input.
| Name | Type | Description | Notes |
|---|---|---|---|
| id | String | A unique identifier for the chat completion. Each chunk has the same ID. | |
| choices | List<CreateChatCompletionStreamResponseChoicesInner> | A list of chat completion choices. Can contain more than one elements if `n` is greater than 1. Can also be empty for the last chunk if you set `stream_options: {"include_usage": true}`. | |
| created | Integer | The Unix timestamp (in seconds) of when the chat completion was created. Each chunk has the same timestamp. | |
| model | String | The model to generate the completion. | |
| serviceTier | ServiceTierEnum | The service tier used for processing the request. This field is only included if the `service_tier` parameter is specified in the request. | [optional] |
| systemFingerprint | String | This fingerprint represents the backend configuration that the model runs with. Can be used in conjunction with the `seed` request parameter to understand when backend changes have been made that might impact determinism. | [optional] |
| _object | ObjectEnum | The object type, which is always `chat.completion.chunk`. | |
| usage | CreateChatCompletionStreamResponseUsage | [optional] |
| Name | Value |
|---|---|
| SCALE | "scale" |
| DEFAULT | "default" |
| Name | Value |
|---|---|
| CHAT_COMPLETION_CHUNK | "chat.completion.chunk" |