/**
 * @verevoir/llm/openai — OpenAI SDK adapter.
 *
 * Wraps the official `openai` package via the Responses API (the
 * post-Chat-Completions canonical surface). Importing this subpath
 * requires `openai` as a peer dependency on the consumer.
 *
 * v0.5.0 ships `chat()` only — single-shot text generation. The
 * materialiser-style paths (review-repo, doc-piece, conversation-doc)
 * use just this. `chatWithTools()` and `chatWithToolLoop()` follow in
 * a subsequent release.
 */
import { type ChatOptions, type ChatReply, type ModelClass, type RatesTable } from '../index.js';
/** Provider id reported on every {@link TokenUsage} this adapter returns. */
export declare const PROVIDER = "openai";
/**
 * Concrete model id per {@link ModelClass}. Reasoning maps to the
 * current GPT-5 tier; extraction maps to GPT-5 Mini for fast/cheap
 * structured tasks.
 *
 * As of 2026-05-20 these are the GA identifiers in the gpt-5 family;
 * upgrades happen here only, no ripple through callers.
 */
export declare const models: Readonly<Record<ModelClass, string>>;
/**
 * Per-model pricing (USD per million tokens) — OpenAI-published rates
 * as of 2026-05-20.
 *
 * **Worst-case approach:** same convention as the other adapters —
 * cached input is billed cheaper than standard but the rate-tuple
 * here is the standard input rate, so pricing via this table is an
 * upper bound. Refresh this table when OpenAI publishes new
 * pricing.
 *
 * Each rate-tuple is `[input_per_million_USD, output_per_million_USD]`.
 *
 * @deprecated Part of the old static-rates cost API. Use
 * `createPriceBook(...)` / `book.costOf(...)` instead (see `src/pricing.ts`)
 * — it prices from LiteLLM's live table (the bundled snapshot as fallback)
 * and reports an unmatched model as `unpriced` rather than `0`.
 */
export declare const rates: RatesTable;
/**
 * Single-shot text generation via the OpenAI Responses API. Same
 * surface as the Anthropic + Google adapters' `chat()`: pass turns
 * + systemPrompt, get `{ content, usage, stopReason }` back. Retry
 * on transient errors with caller-visible narration via `onRetry`.
 *
 * Not yet supported in this adapter (planned follow-up): live progress
 * narration via `onProgress`, tool calling. Aligns with the staged
 * rollout of `/google` — chat() first, tools follow.
 */
export declare function chat(options: ChatOptions): Promise<ChatReply>;
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