data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [
    {
      "index": 0,
      "delta": { "role": "assistant", "content": "This" },
      "finish_reason": null,
      "logprobs": null
    }
  ],
  "usage": null,
  "created": 1726294381
}

data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [
    {
      "index": 0,
      "delta": { "content": " is" },
      "finish_reason": null,
      "logprobs": null
    }
  ],
  "usage": null,
  "created": 1726294381
}

...

data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [
    {
      "index": 0,
      "delta": {},
      "finish_reason": "stop",
      "logprobs": null
    }
  ],
  "usage": null,
  "created": 1726294383
}

data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [],
  "usage": {
    "prompt_tokens": 8,
    "completion_tokens": 4,
    "total_tokens": 12
  },
  "created": 1726294402
}

data: [DONE]
data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [
    {
      "index": 0,
      "delta": { "role": "assistant", "content": "This" },
      "finish_reason": null,
      "logprobs": null
    }
  ],
  "usage": null,
  "created": 1726294381
}

data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [
    {
      "index": 0,
      "delta": { "content": " is" },
      "finish_reason": null,
      "logprobs": null
    }
  ],
  "usage": null,
  "created": 1726294381
}

...

data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [
    {
      "index": 0,
      "delta": {},
      "finish_reason": "stop",
      "logprobs": null
    }
  ],
  "usage": null,
  "created": 1726294383
}

data: {
  "id": "chatcmpl-4b71d12c86d94e719c7e3984a7bb7941",
  "model": "(endpoint-id)",
  "object": "chat.completion.chunk",
  "choices": [],
  "usage": {
    "prompt_tokens": 8,
    "completion_tokens": 4,
    "total_tokens": 12
  },
  "created": 1726294402
}

data: [DONE]
id
string
required

A unique ID of the chat completion.

object
string
required

The object type, which is always set to chat.completion.chunk.

model
string
required

The model to generate the completion. For dedicated endpoints, it returns the endpoint id.

choices
object[]
required
usage
object | null
created
integer
required

The Unix timestamp (in seconds) for when the token sampled.