import * as z from "zod/v3";
import { Result as SafeParseResult } from "../../types/fp.js";
import { SDKValidationError } from "../errors/sdkvalidationerror.js";
export type ModelUsage = {
    modelName: string;
    inputTokens: number;
    outputTokens: number;
};
/** @internal */
export declare const ModelUsage$inboundSchema: z.ZodType<ModelUsage, z.ZodTypeDef, unknown>;
/** @internal */
export type ModelUsage$Outbound = {
    model_name: string;
    input_tokens: number;
    output_tokens: number;
};
/** @internal */
export declare const ModelUsage$outboundSchema: z.ZodType<ModelUsage$Outbound, z.ZodTypeDef, ModelUsage>;
export declare function modelUsageToJSON(modelUsage: ModelUsage): string;
export declare function modelUsageFromJSON(jsonString: string): SafeParseResult<ModelUsage, SDKValidationError>;
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