import * as z from "zod/v3";
import { Result as SafeParseResult } from "../../types/fp.js";
import { SDKValidationError } from "../errors/sdkvalidationerror.js";
import { InputTokensDetails, InputTokensDetails$Outbound } from "./inputtokensdetails.js";
import { OutputTokensDetails, OutputTokensDetails$Outbound } from "./outputtokensdetails.js";
export type Usage = {
    inputTokens: number;
    inputTokensDetails: InputTokensDetails;
    outputTokens: number;
    outputTokensDetails: OutputTokensDetails;
    totalTokens: number;
};
/** @internal */
export declare const Usage$inboundSchema: z.ZodType<Usage, z.ZodTypeDef, unknown>;
/** @internal */
export type Usage$Outbound = {
    input_tokens: number;
    input_tokens_details: InputTokensDetails$Outbound;
    output_tokens: number;
    output_tokens_details: OutputTokensDetails$Outbound;
    total_tokens: number;
};
/** @internal */
export declare const Usage$outboundSchema: z.ZodType<Usage$Outbound, z.ZodTypeDef, Usage>;
export declare function usageToJSON(usage: Usage): string;
export declare function usageFromJSON(jsonString: string): SafeParseResult<Usage, SDKValidationError>;
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