/** User-selectable Codex context controls use whole K-token units. */
export declare const CODEX_CONTEXT_UNIT = 1000;
export declare const CODEX_CONTEXT_MAX = 1000000;
export declare const CODEX_PRESET_ID = "codex";
export declare const CODEX_COLLABORATION_PRESET_ID = "codex-collaboration";
/** The bundled preset and legacy Codex sessions share the same Web controls. */
export declare function isCodexPresetId(value: string | undefined): boolean;
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