import { BaseProvider, type ProviderInfo } from './base.js';
import type { CohereProviderConfig } from '../types/config.js';
import type { CompletionRequest } from '../types/messages.js';
import type { NexusResponse, NexusStream } from '../types/response.js';
/** Cohere's Chat API. */
export declare class CohereProvider extends BaseProvider {
    /** Always `cohere`, hosted. */
    readonly info: ProviderInfo;
    private config;
    constructor(config: CohereProviderConfig);
    /** Runs one completion. */
    complete(request: CompletionRequest): Promise<NexusResponse>;
    /** Streams one completion. */
    stream(request: CompletionRequest): NexusStream;
    /** Whether the models endpoint answers with the configured key. */
    healthCheck(): Promise<boolean>;
    private baseUrl;
    private stripPrefix;
    private extractResponseText;
    private estimateCost;
}