# ChatCompletionMessage

Assistant message in completion response


## Fields

| Field                                                                                    | Type                                                                                     | Required                                                                                 | Description                                                                              |
| ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `role`                                                                                   | [models.ChatCompletionMessageRole](../models/chatcompletionmessagerole.md)               | :heavy_check_mark:                                                                       | N/A                                                                                      |
| `content`                                                                                | *Nullable[str]*                                                                          | :heavy_check_mark:                                                                       | Message content                                                                          |
| `reasoning`                                                                              | *OptionalNullable[str]*                                                                  | :heavy_minus_sign:                                                                       | Reasoning output                                                                         |
| `refusal`                                                                                | *Nullable[str]*                                                                          | :heavy_check_mark:                                                                       | Refusal message if content was refused                                                   |
| `tool_calls`                                                                             | List[[models.ChatCompletionMessageToolCall](../models/chatcompletionmessagetoolcall.md)] | :heavy_minus_sign:                                                                       | Tool calls made by the assistant                                                         |
| `reasoning_details`                                                                      | List[[models.ReasoningDetail](../models/reasoningdetail.md)]                             | :heavy_minus_sign:                                                                       | Reasoning details delta to send reasoning details back to upstream                       |
| `annotations`                                                                            | List[[models.AnnotationDetail](../models/annotationdetail.md)]                           | :heavy_minus_sign:                                                                       | Annotations delta to send annotations back to upstream                                   |