/**
 * @module koi/fast-lane-model
 *
 * Which model fronts the FAST lane (the instant router/voice that sits in
 * front of the smart model). Default: OpenAI's gpt-oss-120b served by Groq.
 * Switchable via config:
 *
 *   { fastLane: { model: "groq/openai/gpt-oss-120b", fallback: "groq/openai/gpt-oss-20b" } }
 *
 * Refs are "provider/model-id" where the MODEL ID MAY ITSELF CONTAIN SLASHES
 * (Groq's id for gpt-oss-120b is literally "openai/gpt-oss-120b"), so refs
 * split on the FIRST slash only. A provider resolves to an OpenAI-compatible
 * chat-completions endpoint: a `models.providers` entry when one is defined
 * (its baseUrl + apiKey), else a built-in endpoint with its env API key.
 */
import type { SKYKOIConfig } from "../config/config.js";
export declare const DEFAULT_FAST_LANE_MODEL = "groq/openai/gpt-oss-120b";
export type FastLaneTarget = {
    provider: string;
    /** Bare model id as the provider's API expects it (may contain slashes). */
    model: string;
    url: string;
    apiKey?: string;
};
/** Split "provider/model-id" on the FIRST slash only. */
export declare function splitFastLaneRef(ref: string): {
    provider: string;
    model: string;
} | null;
export declare function resolveFastLaneTarget(cfg: SKYKOIConfig | undefined, ref: string): FastLaneTarget | null;
/**
 * The ordered fast-lane candidates: configured model (or the default), then
 * the configured fallback if any. Unresolvable refs are dropped — the fast
 * lane always fails silent into the smart path.
 */
export declare function resolveFastLaneTargets(cfg: SKYKOIConfig | undefined): FastLaneTarget[];