Struct UsageMetadata 

pub struct UsageMetadata {
    pub prompt_token_count: Option<u64>,
    pub cached_content_token_count: Option<u64>,
    pub candidates_token_count: Option<u64>,
    pub thoughts_token_count: Option<u64>,
    pub total_token_count: Option<u64>,
}

Token usage metadata from the model API, mirroring the SDK’s UsageMetadata.

Fields

prompt_token_count: Option<u64>

Number of tokens in the prompt.

cached_content_token_count: Option<u64>

Number of tokens from cached content (subset of prompt tokens).

candidates_token_count: Option<u64>

Number of tokens in the generated candidates (excluding thinking).

thoughts_token_count: Option<u64>

Number of tokens used for thinking/reasoning.

total_token_count: Option<u64>

Sum of prompt + candidates + thinking tokens.

Trait Implementations

impl Clone for UsageMetadata

fn clone(&self) -> UsageMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UsageMetadata

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

Formats the value using the given formatter.

impl Default for UsageMetadata

fn default() -> UsageMetadata

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for UsageMetadata

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for UsageMetadata

impl<'py> FromPyObject<'py> for UsageMetadata

fn extract_bound(ob: &Bound<'py, PyAny>) -> PyResult<Self>

Extracts Self from the bound smart pointer obj.

impl PartialEq for UsageMetadata

fn eq(&self, other: &UsageMetadata) -> 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 UsageMetadata

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 UsageMetadata