Struct TokenAccounting 

pub struct TokenAccounting {
    pub input_tokens: u64,
    pub output_tokens: u64,
    pub cost_usd: f64,
    pub latency: Option<RunLatency>,
}

Token and cost accounting contributed by an AgentRunner. Runners opt in by setting AgentOutput::tokens; benchmarks that need economic metrics read it.

Self-reported by the runner; not verified by CAR. Do not use as a trust boundary — for benchmarking and observability only.

Fields

input_tokens: u64

output_tokens: u64

cost_usd: f64

latency: Option<RunLatency>

Per-run latency, when the runner measured it. Rides here (rather than a new AgentOutput field) because every AgentOutput already carries Option<TokenAccounting> and consumers already read it. None for runners that don’t measure it — so the FFI JSON of multi-agent results stays unchanged for them.

Implementations

impl TokenAccounting

pub fn new(input_tokens: u64, output_tokens: u64, cost_usd: f64) -> Self

pub fn with_latency(self, generation_ms: f64, ttft_ms: Option<u64>) -> Self

Attach measured per-run latency. Builder so the 4 ::new() call sites that don’t measure latency are unaffected.

Trait Implementations

impl Clone for TokenAccounting

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 TokenAccounting

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

Formats the value using the given formatter.

impl Default for TokenAccounting

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TokenAccounting

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TokenAccounting

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

where __S: Serializer,

Serialize this value into the given Serde serializer.