Struct DecisionCost 

pub struct DecisionCost {
    pub cost_usd: f64,
    pub tokens_in: u64,
    pub tokens_out: u64,
    pub reasoning_tokens: u64,
}

An agent’s self-reported spend to produce one decision. Every field defaults to zero so a partial report (e.g. tokens only, no dollar figure) still deserializes. The engine reduces this to a single scalar via DecisionCost::billable_units.

Fields

cost_usd: f64

Dollar cost of the compute/tokens spent on this decision. The preferred unit for skill-per-dollar reporting.

tokens_in: u64

Prompt/input tokens consumed.

tokens_out: u64

Completion/output tokens produced.

reasoning_tokens: u64

Reasoning/thinking tokens, reported as a legibility breakdown. Providers typically already bill these inside tokens_out, so they are not re-added into the token total; they are surfaced separately, not double-counted.

Implementations

impl DecisionCost

pub fn billable_units(&self) -> f64

The single scalar the engine folds into Run.cost (any consistent unit, matching the leaderboard’s cost column). Prefers the reported dollar figure; with no dollars reported it falls back to total billable tokens (tokens_in + tokens_out). Reasoning tokens are a sub-breakdown of the output and are not added again.

Trait Implementations

impl Clone for DecisionCost

fn clone(&self) -> DecisionCost

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DecisionCost

impl Debug for DecisionCost

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

Formats the value using the given formatter.

impl Default for DecisionCost

fn default() -> DecisionCost

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DecisionCost

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for DecisionCost

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for DecisionCost

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 DecisionCost