Anthropic v1.0.0+

Experience the Claude family of models with native support for PDF document analysis, advanced reasoning, and long-context capabilities.

Configuration
1. Custom Endpoint
Specific Parameters
Features
PDF Support
Getting an API Key

The Anthropic provider gives access to the Claude family of models, known for high-quality reasoning and coding capabilities.

Configuration

import { createLLM } from "@node-llm/core";

const llm = createLLM({ 
  provider: "anthropic", 
  anthropicApiKey: process.env.ANTHROPIC_API_KEY // Optional if set in env 
});

Custom Endpoint

To route requests through a proxy or Anthropic-compatible gateway, override the base URL via anthropicApiBase (or the ANTHROPIC_API_BASE environment variable):

const llm = createLLM({
  provider: "anthropic",
  anthropicApiBase: "https://my-proxy.example.com/v1"
});

Specific Parameters

You can pass Anthropic-specific parameters or custom headers.

const chat = llm.chat("claude-sonnet-5").withParams({
  top_k: 50,
  top_p: 0.9,
  // Custom headers if needed
  headers: {
    "anthropic-beta": "max-tokens-3-5-sonnet-2024-07-15"
  }
});

Features

Models: claude-sonnet-5, claude-opus-4-8, claude-haiku-4-5, claude-fable-5.
Vision: Analyzes images.
PDF Support: Can read and analyze PDF documents natively.
Tools: Fully supported.
Reasoning: Support for Extended Thinking and token-based thinking budgets on supported Claude models.

PDF Support

Anthropic supports sending PDF files as base64 encoded blocks, which NodeLLM handles automatically.

await chat.ask("Summarize this document", {
  files: ["./report.pdf"]
});