/**
 * Single source of truth for the provider-native key spellings that cap output
 * tokens. Sampling options live in opaque, provider-native `modelOptions`, and
 * every provider spells the token cap differently. Two call sites must agree on
 * this set or they silently drift:
 *
 * - `activities/summarize/chat-stream-summarize.ts` — detects a caller-supplied
 *   token limit so the summarize default never overrides it.
 * - `middlewares/otel.ts` — picks the first numeric spelling to populate the
 *   `gen_ai.request.max_tokens` attribute across providers.
 *
 * Keep this list in lockstep with `MAX_TOKENS_KEY_BY_ADAPTER` (the adapter →
 * native-key map) in the summarize wrapper.
 */
export declare const MAX_TOKENS_KEYS: readonly ["max_output_tokens", "max_tokens", "max_completion_tokens", "maxOutputTokens", "maxCompletionTokens", "maxTokens"];
/**
 * Ollama nests sampling under `options`; its token cap is `options.num_predict`
 * rather than a flat key.
 */
export declare const NESTED_MAX_TOKENS_KEY: "num_predict";