Struct TokenUsage 

pub struct TokenUsage {
    pub input: u64,
    pub output: u64,
    pub cache_read: u64,
    pub cache_write: u64,
}

Tokens consumed by one run.

Cache reads and writes are tracked apart from ordinary input because providers price them differently — often by an order of magnitude — so folding them together would make any derived cost wrong in a way that looks plausible.

Fields

input: u64

Prompt tokens billed at the input rate.

output: u64

Generated tokens.

cache_read: u64

Tokens served from the provider’s prompt cache.

cache_write: u64

Tokens written into the provider’s prompt cache.

Implementations

impl TokenUsage

pub fn total(&self) -> u64

Total tokens, however they were billed.

pub fn is_empty(&self) -> bool

Returns true when nothing was recorded.

pub fn saturating_add(self, other: Self) -> Self

Adds another run’s usage to this one, saturating rather than wrapping.

Trait Implementations

impl Clone for TokenUsage

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TokenUsage

impl Debug for TokenUsage

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

Formats the value using the given formatter.

impl Default for TokenUsage

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TokenUsage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for TokenUsage

impl PartialEq for TokenUsage

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for TokenUsage

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 TokenUsage