Struct TokenUsage 

pub struct TokenUsage {
    pub input_tokens: u32,
    pub output_tokens: u32,
    pub cache_read_tokens: u32,
    pub cache_write_tokens: u32,
}

Token counts reported by the provider for one call.

input_tokens is the full prompt size, cached or not. The two cache fields are subsets of it: they tell you how much of the prompt the provider served from (or wrote to) its prompt cache.

Fields

input_tokens: u32

Prompt tokens consumed, including cached tokens.

output_tokens: u32

Completion tokens produced.

cache_read_tokens: u32

Prompt tokens read from the provider’s prompt cache.

cache_write_tokens: u32

Prompt tokens written to the provider’s prompt cache.

Implementations

impl TokenUsage

pub const fn new(input_tokens: u32, output_tokens: u32) -> Self

Usage with uncached input and output counts.

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

Add two usages without overflowing.

pub const fn total(self) -> u32

Total tokens both directions.

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