import type { AssistantRecord, Usage } from './types.js';
export interface ModelRates {
    input: number;
    output: number;
    cacheRead: number;
    cacheWrite5m: number;
    cacheWrite1h: number;
}
export declare function ratesForModel(model: string): ModelRates;
export declare function isKnownModel(model: string): boolean;
export declare function costForUsage(model: string, usage: Usage): number;
export declare function costForRecord(record: AssistantRecord): number;
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