DeepSeek 4 Online Usage Guide (No Download Required)
Using DeepSeek 4 online requires no software installation; simply open your browser or a third-party portal. This article details how to use DeepSeek without downloading anything, and summarizes quick start guides, model selection, and practical tips, perfect for beginners to get started in 3 minutes.
1. DeepSeek 4 Online Access (No Installation)
Choose either of the two methods below. No installation required, saving time and storage space.
| Method | Address | Description |
|---|---|---|
| Web Version (Recommended) | https://chat.deepseek.com | Most feature-complete. Recommended for first-time users. |
| Official Website Portal | https://www.deepseek.com | Click “Online Experience” or “Start Using Now” to begin a conversation. |
| Third-Party Experience Portal | https://app.deepseek4.hk | Direct access to the experience page, supporting text chat, file parsing, and multimodal generation. |
Usage Notes: New users can enjoy free trial credits; enterprise users can unlock higher permissions after completing verification. The current experience version is continuously iterating, with some advanced features being gradually released.
→ Use DeepSeek 4 Now (Online Portal, No Download Required)
2. Two Core Models: How to Choose Between V3 and R1
The DeepSeek online version offers two modes. Understanding their use cases makes them more effective:
- V3 Model (Default): Fast response, rich knowledge. Suitable for daily conversation and knowledge Q&A.
- R1 Model (Deep Thinking): Strong logic, in-depth analysis. Suitable for complex problem analysis and creative writing.
Advanced Technique: You can first use R1 to analyze the problem framework, then use V3 to quickly generate content, and finally use R1 to refine and polish.
3. Basic but Practical Prompting Techniques
Don’t overcomplicate your prompts. DeepSeek understands “plain language” well. You don’t need to write long prompts; just clearly state the context, your needs, and any constraints.
Universal Template:
- Context: What I do / What I want to do
- Need: Specifically what I want
- Constraints: Any special requirements (optional)
Example: “Context: I’m a new cat owner. Need: Help me write a guide on choosing cat food. Constraints: Budget under 2000.”
To make responses more relatable, you can add: “Explain in simple terms,” “Talk like you’re chatting with a friend,” or “Assume I’m a beginner.”
4. Advanced Techniques: Web Search, Multi-Model, and File Upload
- Web Search: When you need the latest news, real-time data, or to verify information, enable the web search function and explicitly ask for information sources.
- File Upload: Supports text documents, PDFs, Excel files, images, etc. Can be used for document analysis, data processing, and content extraction.
- Service Status: Before use, you can visit status.deepseek.com to check the system status. It’s advisable to postpone usage if the status is red.
5. Technical Limitations and Notes
- Context Length: Maximum ~64k tokens. Output Length: Maximum ~8k tokens, default ~4k tokens.
- Sensitive topics and prohibited content will be rejected or terminated. Excessively complex long texts may not perform well.
6. Final Notes
Using DeepSeek 4 online requires no download; just open your browser on a computer. Mastering the access points and techniques above will help you get started faster and improve efficiency.
→ Use DeepSeek 4 Now (Online Experience Portal)
If you have questions or want to share your experience, feel free to leave a comment below.