How to Use DeepSeek V4: Beginner's Complete Guide

Introduction

Ready to start using DeepSeek V4? This guide will have you chatting, coding, and solving problems in just 5 minutes - completely free.

Method 1: NoteLM.ai (Easiest)

Step 1: Visit NoteLM.ai

Go to NoteLM.ai/free-deepseek-v4

Step 2: Start Chatting

• No account required
• No credit card needed
• Just type and go

Step 3: Choose Your Use Case

• General Chat: /free-deepseek-v4/chat
• Coding Help: /free-deepseek-v4/coding
• Math Solving: /free-deepseek-v4/math
• Research: /free-deepseek-v4/research

Effective Prompting Tips

For Coding

Write a Python function that takes a list of numbers and returns 
the top 3 largest. Include error handling and type hints.

For Math

Solve step by step: ∫(x³ + 2x² - 5x + 1)dx
Show all work and explain each step.

For Writing

Write a professional email declining a meeting invitation.
Tone: polite but firm. Length: 2-3 paragraphs.

Using the API

Quick Start (Python)

from openai import OpenAI

client = OpenAI(
    api_key="your-api-key",
    base_url="https://api.notelm.ai/v1"
)

response = client.chat.completions.create(
    model="deepseek-v4",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

Get Your API Key

1. 1.Visit /free-deepseek-v4/api
2. 2.Sign up for free
3. 3.Generate API key
4. 4.Start building!

Best Practices

1. Be Specific

❌ "Help me code"

✅ "Write a React component for a dropdown menu with search functionality"

2. Provide Context

❌ "Fix this bug"

✅ "This function returns None instead of the expected list. Here's the code: [code]"

3. Ask for Explanations

✅ "Explain your solution step by step"

✅ "Why did you choose this approach?"

Common Use Cases

Troubleshooting

"Response seems wrong"

• Add more context to your prompt
• Ask it to explain its reasoning
• Try rephrasing your question

"Too short/long"

• Specify desired length: "Write 500 words about..."
• Ask for expansion: "Elaborate on point 2"

Start now → Chat with DeepSeek V4