import type { ProviderPricingBasis } from "./plan.js";
/**
 * Synchronous provider billing-basis cost —
 * the configured-list-rate calculation used when a provider (Azure) reports
 * usage but not dollars. OpenRouter's provider-reported cost keeps the
 * existing path in `llm.ts` and never goes through this function.
 *
 * Results are USD cents at the inference log's numeric(10, 4) precision.
 */
export interface BillingBasisUsage {
    readonly inputTokens: number;
    /**
     * Provider-reported cached (discounted) input tokens. Whether this is a
     * subset of `inputTokens` or a disjoint count is DECLARED by the binding's
     * `cachedTokenSemantics` — never inferred from the relative sizes.
     */
    readonly cachedInputTokens: number;
    /**
     * Provider completion-token total. Already includes reasoning tokens — do
     * not add them a second time.
     */
    readonly outputTokens: number;
}
export type BillingBasisResult = Readonly<{
    ok: true;
    costCents: number;
}> | Readonly<{
    ok: false;
    reason: string;
}>;
/**
 * Compute the list-rate cost in USD cents from usage and configured
 * per-million-token rates. Rejects internally inconsistent usage rather than
 * producing a zero-cost call: negative counts, non-integers,
 * all-zero usage (a request always consumes prompt tokens — zeros mean the
 * provider's accounting is broken, not that the call was free), and — under
 * declared `"subset"` semantics — cached counts exceeding total input.
 *
 * The uncached-input calculation follows the binding's declared
 * `cachedTokenSemantics`:
 * - `"subset"`  — cached ⊆ input (OpenAI): uncached = input − cached.
 * - `"disjoint"` — cached reported alongside input (Grok via Azure AI
 *   Foundry, observed live: cached 192 vs prompt 88): uncached = input.
 * Either way every token prices exactly once at its own rate.
 */
export declare function computeConfiguredRatesCostCents(pricing: Extract<ProviderPricingBasis, {
    kind: "configured_token_rates";
}>, usage: BillingBasisUsage): BillingBasisResult;