anthropic(model, options?)

Creates an Anthropic provider backed by the official @ai-sdk/anthropic adapter.

Signature

function anthropic(model: string, options?: AnthropicOptions): AIProvider

Options

interface AnthropicOptions {
  /** Anthropic API key. Defaults to ANTHROPIC_API_KEY env var. */
  apiKey?: string;
}

Installation

npm install @daedalus-ai-dev/ai-sdk @ai-sdk/anthropic

Examples

Basic usage

import { agent, configure, anthropic } from '@daedalus-ai-dev/ai-sdk';

configure({ provider: anthropic('claude-sonnet-4-5') });

const response = await agent({
  instructions: 'You are a helpful assistant.',
}).prompt('Explain monads in one paragraph.');

Explicit API key

configure({
  provider: anthropic('claude-opus-4-6', { apiKey: process.env.MY_ANTHROPIC_KEY }),
});

Popular model IDs

Model	Notes
claude-opus-4-6	Most capable, best for complex tasks
claude-sonnet-4-6	Balanced performance and speed
claude-sonnet-4-5	Fast, cost-efficient
claude-haiku-4-5-20251001	Fastest and most compact

See the Anthropic models documentation for the full list.