Struct RealUsage 

pub struct RealUsage {
    pub model: String,
    pub input_tokens: u64,
    pub output_tokens: u64,
    pub cache_read_tokens: u64,
    pub cache_write_tokens: u64,
    pub reasoning_tokens: u64,
}

One LLM turn’s real, provider-reported usage, normalized to billable buckets.

output_tokens already includes reasoning/thinking tokens (they are billed at the output rate); reasoning_tokens is retained only for display.

Fields

model: String

input_tokens: u64

Input tokens billed at the input rate (cache reads/writes excluded).

output_tokens: u64

Output tokens billed at the output rate (includes reasoning/thoughts).

cache_read_tokens: u64

Input tokens served from the prompt cache (billed at the cache-read rate).

cache_write_tokens: u64

Input tokens written to the prompt cache (Anthropic only; 0 elsewhere).

reasoning_tokens: u64

Reasoning/thinking subset of output_tokens (display only).

Trait Implementations

impl Clone for RealUsage

fn clone(&self) -> RealUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RealUsage

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

Formats the value using the given formatter.

impl Default for RealUsage

fn default() -> RealUsage

Returns the “default value” for a type.

impl PartialEq for RealUsage

fn eq(&self, other: &RealUsage) -> 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 StructuralPartialEq for RealUsage