import type { Api, Model } from "./types";
export interface CodexGpt56ContextCapPolicy {
    fallback: number;
    ceiling: number;
}
export declare const CODEX_GPT_5_6_CONTEXT_CAP: CodexGpt56ContextCapPolicy;
export declare function isCodexProductTransport(model: Pick<Model<Api>, "api" | "provider">): boolean;
export declare function isCodexGpt56Tier(model: Pick<Model<Api>, "id">): boolean;
export declare function resolveCodexGpt56DiscoveryContext(model: Pick<Model<Api>, "api" | "id" | "provider">, rawContextWindow: unknown, policy?: CodexGpt56ContextCapPolicy): number;
export declare function applyFinalCodexGpt56ContextCap<TApi extends Api>(models: readonly Model<TApi>[], policy?: CodexGpt56ContextCapPolicy): Model<TApi>[];