> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo/fabric/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/fabric/_mcp/server.

# Struct OpenAI Chat Completion Chunk

> OpenAI Chat Completions chunk accepted by the native streaming profile.

Generated from `cargo doc --no-deps -p nemo-fabric-core`.

<pre />

OpenAI Chat Completions chunk accepted by the native streaming profile.

## Fields

### `id: String`

Provider-generated response identifier.

### `object: OpenAiChatCompletionChunkObject`

Exact OpenAI streaming object discriminator.

### `created: u64`

Unix timestamp in seconds.

### `model: String`

Model identifier.

### `choices: Vec<OpenAiChatCompletionChunkChoice>`

Incremental choices; an explicit usage-only chunk can contain none.

### `usage: Option<BTreeMap<String, Value>>`

Optional token-usage data.

### `extensions: BTreeMap<String, Value>`

Additional OpenAI-compatible top-level fields preserved by pass-through.

## Trait Implementations

### `impl Clone for OpenAiChatCompletionChunk`

<pre />

#### `clone`

<pre />

#### `clone_from`

<pre />

### `impl Debug for OpenAiChatCompletionChunk`

<pre />

#### `fmt`

<pre />

### `impl<'de> Deserialize<'de> for OpenAiChatCompletionChunk`

<pre />

#### `deserialize`

<pre />

### `impl JsonSchema for OpenAiChatCompletionChunk`

<pre />

#### `schema_name`

<pre />

#### `schema_id`

<pre />

#### `json_schema`

<pre />

#### `inline_schema`

<pre />

### `impl PartialEq for OpenAiChatCompletionChunk`

<pre />

#### `eq`

<pre />

#### `ne`

<pre />

### `impl Serialize for OpenAiChatCompletionChunk`

<pre />

#### `serialize`

<pre />

### `impl StructuralPartialEq for OpenAiChatCompletionChunk`

<pre />