DeepSeek v0.8.0+

Access high-performance chat and advanced reasoning models with competitive pricing and full support for the DeepSeek R1 thought process.

Configuration
1. Custom Endpoint
Specific Parameters
Features
Usage Details
Getting an API Key

The DeepSeek provider offers high-performance chat and reasoning models with competitive pricing. NodeLLM supports both the DeepSeek-V3 chat model and the DeepSeek-R1 reasoning model.

Configuration

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

const llm = createLLM({ 
  provider: "deepseek", 
  deepseekApiKey: process.env.DEEPSEEK_API_KEY // Optional if set in env 
});

Custom Endpoint

To use a self-hosted or proxied DeepSeek-compatible endpoint, override the base URL via deepseekApiBase (or the DEEPSEEK_API_BASE environment variable):

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

Specific Parameters

You can pass DeepSeek-specific parameters using .withParams().

const chat = llm.chat("deepseek-chat").withParams({
  presence_penalty: 0.5,
  frequency_penalty: 0.5,
  top_p: 0.9
});

Features

Models:
- deepseek-chat: Optimized for speed and proficiency in broad tasks (DeepSeek-V3).
- deepseek-reasoner: Optimized for complex reasoning and problem solving (DeepSeek-R1).
Tools: Supported on deepseek-chat.
Reasoning: Access inner thought process text from deepseek-reasoner.
Streaming: Full streaming support for all models.
Structured Output: Supported via automated prompt engineering and json_object mode transitions.

Usage Details

DeepSeek provides OpenAI-compatible endpoints, but NodeLLM handles the specific capability differences (like reasoning vs tool support) automatically through its internal registry.