Struct UsageAccumulator 

pub struct UsageAccumulator {
    pub total_prompt_tokens: u64,
    pub total_completion_tokens: u64,
    pub total_tokens: u64,
    pub total_cost_usd: f64,
    pub call_count: u64,
}

Accumulates token usage and cost across multiple LLM calls

Fields

total_prompt_tokens: u64

Total prompt tokens across all calls

total_completion_tokens: u64

Total completion tokens across all calls

total_tokens: u64

Total tokens across all calls

total_cost_usd: f64

Total cost across all calls (USD)

call_count: u64

Number of LLM calls made

Implementations

impl UsageAccumulator

pub fn new() -> Self

Create a new accumulator

pub fn add(&mut self, usage: &TokenUsage, cost: f64)

Add usage from a single call

pub fn add_with_pricing(&mut self, usage: &TokenUsage, pricing: &ModelPricing)

Add usage with automatic cost calculation

pub fn add_for_model(&mut self, usage: &TokenUsage, model: &str)

Add usage with model-based pricing

pub fn avg_tokens_per_call(&self) -> f64

Get average tokens per call

pub fn avg_cost_per_call(&self) -> f64

Get average cost per call

Trait Implementations

impl Clone for UsageAccumulator

fn clone(&self) -> UsageAccumulator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UsageAccumulator

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

Formats the value using the given formatter.

impl Default for UsageAccumulator

fn default() -> UsageAccumulator

Returns the “default value” for a type.