import type { ModelDefinition, TokenLimits } from './registry.js';
/** Per-token USD rates served by the provider's own /models payload. */
export interface ProviderModelPricing {
    prompt: number;
    completion: number;
    cacheRead?: number | undefined;
    cacheWrite?: number | undefined;
}
export interface ModelLimitsServiceOptions {
    readonly cachePath: string;
}
export declare function getModelLimitsCachePath(cacheDir: string): string;
export declare class ModelLimitsService {
    private readonly options;
    private cachedData;
    private cachedOrMap;
    constructor(options: ModelLimitsServiceOptions);
    private ensureOpenRouterMap;
    private resolveTokenLimits;
    getPricingForModel(modelId: string, provider: string): ProviderModelPricing | null;
    /** Epoch ms of the fetch behind the current pricing/limits cache, or null when no cache is loaded. */
    getPricingFetchedAt(): number | null;
    getTokenLimitsForModel(modelDef: ModelDefinition): Required<TokenLimits>;
    getContextWindowForModel(modelDef: ModelDefinition): number;
    getToolResultMaxCharsForModel(model: ModelDefinition | null | undefined): number;
    refresh(): Promise<number>;
    init(): void;
}
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