Struct Usage 

pub struct Usage {
    pub prompt_tokens: Option<u64>,
    pub completion_tokens: Option<u64>,
    pub thoughts_tokens: Option<u64>,
    pub total_tokens: Option<u64>,
    pub cost_usd: Option<f64>,
    pub cache_read_input_tokens: Option<u64>,
    pub cache_creation_input_tokens: Option<u64>,
}

Token usage statistics from an LLM API response.

Uses u64 for token counts to handle large values consistently across different platforms and avoid truncation.

Fields

prompt_tokens: Option<u64>

completion_tokens: Option<u64>

thoughts_tokens: Option<u64>

total_tokens: Option<u64>

cost_usd: Option<f64>

cache_read_input_tokens: Option<u64>

Prompt tokens read from the provider’s prompt cache. Included in prompt_tokens.

cache_creation_input_tokens: Option<u64>

Prompt tokens written to the provider’s prompt cache. Included in prompt_tokens.

Trait Implementations

impl Clone for Usage

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Usage

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

Formats the value using the given formatter.

impl Default for Usage

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Usage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Usage

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

where __S: Serializer,

Serialize this value into the given Serde serializer.