Struct PriceBook 

pub struct PriceBook { /* private fields */ }

Configurable USD price book for eval-run cost estimation.

Implementations

impl PriceBook

pub fn default_set() -> Self

A price book with a few common models preloaded (approximate list prices).

pub fn set(&mut self, model: impl Into<String>, price: Price)

Sets (or overrides) the price for a model. Prices are in “units per 1M”: a price of 3 means $3.00 per 1M input tokens.

pub fn get(&self, model: &str) -> Option<Price>

Looks up an exact model price.

pub fn estimate(&self, usage: &TokenUsage) -> Option<f64>

Estimates the USD cost of a usage report; None when the model isn’t in the book.

Pure function over the book + usage, so it is trivially unit-testable.

pub fn estimate_cost( &self, prompt_tokens: usize, completion_tokens: usize, model: &str, ) -> Option<f64>

Estimates the USD cost of token counts for a named model.

Integer cents-per-1M math: prompt / 1e6 * input_price/100. Returns None when the model is not in the book.

Trait Implementations

impl Clone for PriceBook

fn clone(&self) -> PriceBook

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PriceBook

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

Formats the value using the given formatter.

impl Default for PriceBook

fn default() -> PriceBook

Returns the “default value” for a type.