Struct ChatCompletionChunk 

pub struct ChatCompletionChunk {
    pub id: String,
    pub object: String,
    pub created: i64,
    pub model: String,
    pub choices: Vec<ChoiceDelta>,
    pub usage: Option<Usage>,
}

SSE event for streaming chat completions (OpenAI-compatible format)

Fields

id: String

Unique identifier for the chunk

object: String

Object type (always “chat.completion.chunk”)

created: i64

Unix timestamp

model: String

Model used

choices: Vec<ChoiceDelta>

Choice deltas

usage: Option<Usage>

Usage statistics (optional, for include_usage streaming)

Implementations

impl ChatCompletionChunk

pub fn new( id: String, model: String, index: u32, delta: DeltaContent, finish_reason: Option<String>, ) -> Self

Create a new chunk with a single choice

pub fn final_chunk(id: String, model: String, finish_reason: &str) -> Self

Create a final chunk with finish_reason

pub fn generate_id() -> String

Generate a new chunk ID

Trait Implementations

impl Clone for ChatCompletionChunk

fn clone(&self) -> ChatCompletionChunk

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ChatCompletionChunk

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ChatCompletionChunk

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ChatCompletionChunk

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.