Struct RequestBody 

pub struct RequestBody {

    pub messages: Vec<ChatCompletionMessageParam>,
    pub model: Model,
    pub audio: Option<ChatCompletionAudioParam>,
    pub frequency_penalty: Option<f64>,
    pub function_call: Option<ChatCompletionFunctionCallOptionParam>,
    pub functions: Option<Vec<ChatCompletionLegacyFunction>>,
    pub logit_bias: Option<LogitBias>,
    pub logprobs: Option<bool>,
    pub max_completion_tokens: Option<u64>,
    pub max_tokens: Option<u64>,
    pub metadata: Option<Metadata>,
    pub modalities: Option<Vec<ChatCompletionModality>>,
    pub n: Option<u32>,
    pub parallel_tool_calls: Option<bool>,
    pub prediction: Option<ChatCompletionPredictionContent>,
    pub presence_penalty: Option<f64>,
    pub prompt_cache_key: Option<String>,
    pub prompt_cache_retention: Option<ChatCompletionPromptCacheRetention>,
    pub reasoning_effort: Option<ChatCompletionReasoningEffort>,
    pub response_format: Option<ChatCompletionResponseFormat>,
    pub safety_identifier: Option<String>,
    pub seed: Option<i64>,
    pub service_tier: Option<ChatCompletionServiceTier>,
    pub stop: Option<ChatCompletionStop>,
    pub store: Option<bool>,
    pub stream: Option<bool>,
    pub stream_options: Option<ChatCompletionStreamOptions>,
    pub temperature: Option<f64>,
    pub tool_choice: Option<ChatCompletionToolChoiceOption>,
    pub tools: Option<Vec<ChatCompletionTool>>,
    pub top_logprobs: Option<u32>,
    pub top_p: Option<f64>,
    pub user: Option<String>,
    pub verbosity: Option<ChatCompletionVerbosity>,
    pub thinking: Option<ChatCompletionClaudeThinkingConfig>,
    pub thinking_config: Option<ChatCompletionGeminiExtraThinkingConfig>,
    pub cached_content: Option<String>,
    pub web_search_options: Option<ChatCompletionWebSearchOptions>,
}

Body payload for POST /chat/completions.

Fields

messages: Vec<ChatCompletionMessageParam>

A list of messages comprising the conversation so far.

model: Model

Model identifier.

audio: Option<ChatCompletionAudioParam>

Audio output configuration.

frequency_penalty: Option<f64>

Frequency penalty in range [-2.0, 2.0].

function_call: Option<ChatCompletionFunctionCallOptionParam>

Deprecated function-call control.

functions: Option<Vec<ChatCompletionLegacyFunction>>

Deprecated function definitions.

logit_bias: Option<LogitBias>

Token-level logit bias.

logprobs: Option<bool>

Whether to return logprobs.

max_completion_tokens: Option<u64>

Upper bound of generated tokens including reasoning tokens.

max_tokens: Option<u64>

Deprecated maximum generated tokens.

metadata: Option<Metadata>

Request metadata key-value map.

modalities: Option<Vec<ChatCompletionModality>>

Output modalities.

n: Option<u32>

Number of choices to generate.

parallel_tool_calls: Option<bool>

Enable parallel tool calls.

prediction: Option<ChatCompletionPredictionContent>

Predicted output content.

presence_penalty: Option<f64>

Presence penalty in range [-2.0, 2.0].

prompt_cache_key: Option<String>

Prompt cache bucketing key.

prompt_cache_retention: Option<ChatCompletionPromptCacheRetention>

Prompt cache retention policy.

reasoning_effort: Option<ChatCompletionReasoningEffort>

Reasoning effort level.

response_format: Option<ChatCompletionResponseFormat>

Output format control.

safety_identifier: Option<String>

Stable safety identifier.

seed: Option<i64>

Best-effort deterministic seed.

service_tier: Option<ChatCompletionServiceTier>

Requested processing tier.

stop: Option<ChatCompletionStop>

Stop sequence(s).

store: Option<bool>

Whether to store output.

stream: Option<bool>

Whether to stream with SSE.

stream_options: Option<ChatCompletionStreamOptions>

Streaming options.

temperature: Option<f64>

Sampling temperature in range [0, 2].

tool_choice: Option<ChatCompletionToolChoiceOption>

Tool selection policy.

tools: Option<Vec<ChatCompletionTool>>

Available tools.

top_logprobs: Option<u32>

Number of top candidate tokens in logprobs.

top_p: Option<f64>

Nucleus sampling probability mass.

user: Option<String>

Deprecated user identifier.

verbosity: Option<ChatCompletionVerbosity>

Verbosity hint.

thinking: Option<ChatCompletionClaudeThinkingConfig>

Provider-specific OpenAI-compatible extension payload (flattened). Claude-compatible extended thinking control.

thinking_config: Option<ChatCompletionGeminiExtraThinkingConfig>

cached_content: Option<String>

web_search_options: Option<ChatCompletionWebSearchOptions>

Web-search tool options.

Trait Implementations

impl Clone for RequestBody

fn clone(&self) -> RequestBody

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RequestBody

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

Formats the value using the given formatter.

impl Default for RequestBody

fn default() -> RequestBody

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RequestBody

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for RequestBody

fn eq(&self, other: &RequestBody) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for RequestBody

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RequestBody