DeepSeek Chatbot - Chinese-Optimized Free AI Chat Tool

📋 Service Information

Provider: DeepSeek
Service Type: Chatbot (Web Conversation Interface)
Access URL: https://chat.deepseek.com
Free Tier: Free to use (thinking mode has daily limits)

🎯 Service Overview

DeepSeek Chatbot is a powerful free AI conversation platform providing advanced features such as web search, code execution, file upload, and the visible thinking mode feature.

Key Advantages:

• 🆓 Free to Use - Basic chat free, thinking mode has daily limits
• 🆕 Latest V3.2 - Released December 2025, enhanced Agent capabilities
• 🧠 Thinking Mode - Transparent reasoning process
• 🌐 Web Search - Get real-time information
• 💻 Code Execution - Run code online
• 📄 File Upload - Support PDF, Word, images, etc.
• 🇨🇳 Chinese Optimized - Top-tier Chinese performance

🚀 How to Use

Prerequisites

• ✅ Registered DeepSeek account (phone number or email)
• ❌ No credit card required

For detailed registration steps, see: DeepSeek Registration Guide

Usage Steps

Step 1: Access and Login

1. Visit: https://chat.deepseek.com
2. Login with your account

Step 2: Select Model

Choose model in the conversation interface:

Step 3: Start Conversation

1. Enter your question in the input box
2. Click send or press Enter
3. Wait for response

🎨 Feature Highlights

1. Basic Conversation

Supported Features:

• Multi-turn conversation, automatically maintains context
• Bilingual Chinese-English
• Ultra-long text understanding

2. Web Search (Real-time Information)

Features:

• Automatically searches web for latest information
• Provides source citations
• Ensures answer timeliness

Usage:

• Directly ask questions needing real-time information
• Examples: “Today’s news”, “Latest AI developments”

3. Code Execution

Features:

• Run Python, JavaScript, and other code online
• Display execution results
• Support data visualization

Usage Example:

User: "Help me plot a sin function graph and run it"

DeepSeek will:
1. Generate Python code
2. Execute in sandbox
3. Display image result

4. File Upload and Analysis

Supported Formats:

• 📄 Documents: PDF, Word, Excel, TXT
• 🖼️ Images: JPG, PNG, GIF, WEBP
• 📊 Data: CSV, JSON

Usage:

1. Click 📎 icon on the left of input box
2. Upload file
3. Ask questions about the file

Application Scenarios:

• Analyze PDF papers
• Understand image content
• Process Excel data
• Summarize Word documents

5. Chain-of-Thought Display (R1 Model)

Features:

• Display model’s reasoning process
• Understand problem-solving steps
• Learn thinking methods

Example:

User: Calculate 23 × 47

R1 Thinking Process:
1. Decompose: 23 × 47 = 20×47 + 3×47
2. Calculate 20×47 = 940
3. Calculate 3×47 = 141
4. Add: 940 + 141 = 1081

Answer: 1081

6. Image Understanding (Multimodal)

Features:

• Recognize image content
• Analyze chart data
• OCR text recognition
• Image description generation

🔢 Usage Limits

Free Quotas

Quota Reset

• Resets daily at Beijing time 00:00
• May queue during peak hours

💡 Usage Tips

✅ Best Practices

1. Choose the Right Model

   General conversation → DeepSeek V3
   Math reasoning → DeepSeek R1
   Programming tasks → DeepSeek Coder V2

2. Fully Utilize Advanced Features

   • Trigger web search when needing latest information
   • Let DeepSeek run code to verify results
   • Upload documents for AI analysis and summary
   • Use R1 to learn reasoning methods

3. Optimize Prompts

   • Ask clear and specific questions
   • Provide necessary background information
   • Specify output format

4. Manage Quotas

   • Reasonably use daily 50-message quota
   • Prioritize complex tasks
   • Avoid meaningless repeated questions

⚠️ Precautions

1. Quota Management

   • Thinking mode has daily message limits (~50 messages/day)
   • Resets at Beijing time 00:00
   • Basic chat mode usually has no limits

2. Content Review

   • Follow Chinese laws and regulations
   • Sensitive content will be rejected
   • Focus on legal and compliant use

3. Data Privacy

   • Conversation history saved locally
   • DeepSeek promises not to use for training
   • Be cautious with sensitive information

4. Network Requirements

   • Servers in China, fast speed
   • Mainland China access smooth
   • No VPN required

🔧 Common Issues

1. What to Do When Free Quota Runs Out?

Solutions:

• Wait for next day quota reset
• Or upgrade to Pro membership (paid)

2. How to Check Remaining Quota?

Method:

• Check in top right of conversation interface
• Shows remaining messages for today

3. R1 Chain-of-Thought Display Slow?

Reason:

• R1 model needs more thinking time
• This is normal

Suggestion:

• Be patient
• Complex problems worth waiting

4. File Upload Failed?

Check:

• Whether file size exceeds 10MB
• Whether file format is supported
• Whether network connection is stable

📚 Related Resources

Documentation and Tutorials

• DeepSeek Complete Guide
• API Service Guide
• Official Help Center

🌟 Advanced Usage

Academic Research Assistant

Application:

1. Upload PDF paper
2. Ask DeepSeek to analyze core contributions
3. Ask related questions
4. Generate paper summary

Code Learning Assistant

Application:

1. Paste code snippet
2. Ask DeepSeek to explain logic
3. Ask for optimization suggestions
4. Let DeepSeek run code demonstration

Math Problem Solving Assistant

Application:

1. Use R1 model
2. Enter math problem
3. View complete reasoning process
4. Learn problem-solving approach

Service Provider: DeepSeek