Struct ChatCompletionRequest 

pub struct ChatCompletionRequest {
    pub model: String,
    pub messages: Vec<ChatMessage>,
    pub tools: Option<Vec<Tool>>,
    pub tool_choice: Option<ToolChoice>,
    pub stream: Option<bool>,
    pub stream_options: Option<StreamOptions>,
    pub parameters: HashMap<String, Value>,
}

Chat completion request to LLM API.

Main request structure sent to LLM providers to generate chat completions with optional tool calling support.

Fields

• model - Model identifier (e.g., “gpt-4o-mini”, “claude-3-opus”)
• messages - Conversation history
• tools - Available tools for the model
• tool_choice - Tool selection strategy
• stream - Whether to stream the response
• stream_options - Streaming options
• parameters - Additional model parameters (temperature, etc.)

Example

let request = ChatCompletionRequest {
    model: "gpt-4o-mini".to_string(),
    messages: vec![
        ChatMessage::user("What is Rust?"),
    ],
    stream: Some(true),
    ..Default::default()
};

Fields

model: String

The model to use for the completion.

messages: Vec<ChatMessage>

A list of messages comprising the conversation so far.

tools: Option<Vec<Tool>>

A list of tools the model may call.

tool_choice: Option<ToolChoice>

Controls which function is called by the model.

stream: Option<bool>

Whether to stream the response.

stream_options: Option<StreamOptions>

Options for streaming response. Set include_usage: true to receive usage information.

parameters: HashMap<String, Value>

Additional parameters like temperature, top_p, etc.

Trait Implementations

impl Clone for ChatCompletionRequest

fn clone(&self) -> ChatCompletionRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChatCompletionRequest

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

Formats the value using the given formatter.

impl Default for ChatCompletionRequest

fn default() -> ChatCompletionRequest

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ChatCompletionRequest

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ChatCompletionRequest

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

where __S: Serializer,

Serialize this value into the given Serde serializer.