> 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 Choice

> One choice within an OpenAI Chat Completions streaming chunk.

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

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One choice within an OpenAI Chat Completions streaming chunk.

## Fields

### `index: u32`

Choice index within the response.

### `delta: OpenAiChatCompletionChunkDelta`

Incremental assistant message fields.

### `finish_reason: Option<String>`

Terminal reason when this choice finishes.

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

Incremental log-probability information.

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

Additional OpenAI-compatible choice fields preserved by pass-through.

## Trait Implementations

### `impl Clone for OpenAiChatCompletionChunkChoice`

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#### `clone`

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#### `clone_from`

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### `impl Debug for OpenAiChatCompletionChunkChoice`

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#### `fmt`

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

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#### `deserialize`

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### `impl JsonSchema for OpenAiChatCompletionChunkChoice`

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#### `schema_name`

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#### `schema_id`

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#### `json_schema`

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#### `inline_schema`

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### `impl PartialEq for OpenAiChatCompletionChunkChoice`

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#### `eq`

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#### `ne`

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### `impl Serialize for OpenAiChatCompletionChunkChoice`

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#### `serialize`

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### `impl StructuralPartialEq for OpenAiChatCompletionChunkChoice`

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