Struct Cost 

pub struct Cost {
    pub input: f64,
    pub output: f64,
    pub cache_read: f64,
    pub cache_write: f64,
    pub total: f64,
}

费用明细（单位：美元）。

按 token 类别拆分，total 为各项之和。 仅在上层持有定价表时可计算，因此 Usage 中为 Option<Cost>。

Fields

input: f64

输入 token 费用

output: f64

输出 token 费用

cache_read: f64

缓存读取 token 费用

cache_write: f64

缓存写入 token 费用

total: f64

总费用（各项之和）

Trait Implementations

impl Clone for Cost

fn clone(&self) -> Cost

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cost

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Cost

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Cost

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

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 Cost