Want to use DeepSeek V4 Flash inside VS Code for free? In this tutorial, I’ll show you how to set it up and use it for coding without manually configuring an expensive API or purchasing a subscription.
I’ll also test DeepSeek V4 Flash by asking it to build a complete QR Code Generator using HTML, CSS, and JavaScript.
🎥 Watch the Video Tutorial
How to Use DeepSeek V4 Flash in VS Code
Follow these steps to get started:
- Visit the cline.bot and create a free account.
- Open your project folder in VS Code.
- Go to the Extensions section.
- Search for and install the coding extension shown in the tutorial.
- Open the extension and sign in to your account.
- Complete the browser authentication process.
- Open the model selector and choose DeepSeek V4 Flash.
- Enter a simple prompt to verify that everything is working.
That’s it! DeepSeek V4 Flash should now be ready to use directly inside VS Code.
🚀 Testing DeepSeek V4 Flash
To test its coding capabilities, I asked DeepSeek V4 Flash to create a complete QR Code Generator website.
The goal was to build the entire application inside a single HTML file using only HTML, CSS, and vanilla JavaScript.
📋 Prompt Used in the Video
You can copy the same prompt below and test DeepSeek V4 Flash yourself:
Build a complete, modern QR Code Generator in a SINGLE HTML file using only HTML, CSS, and Vanilla JavaScript.
Requirements:
- Everything should be inside one HTML file (no separate CSS or JS files).
- Use a clean, responsive UI with a modern glassmorphism design.
- Add a centered card layout with smooth animations.
- Input field to enter text, URL, phone number, email, or WiFi string.
- "Generate QR Code" button.
- Generate QR code instantly using a free CDN library.
- Display QR code inside a preview section.
- Add Download PNG button.
- Add Copy Text button.
- Add Clear button.
- Add QR size selector (200px, 300px, 400px).
- Live validation (disable Generate button when input is empty).
- Press Enter to generate.
- Loading animation while generating.
- Dark/Light mode toggle.
- Mobile responsive.
- Show toast notifications for Download, Copy, and Errors.
- Add subtle hover effects and transitions.
- Add footer with "Made with ❤️ using HTML CSS JavaScript".
- Code should be clean, well-commented, and easy to understand.
- No frameworks.
- No backend.
- Produce a polished, production-quality UI.Paste the prompt into DeepSeek V4 Flash inside VS Code and let it generate the project.
DeepSeek V4 Flash Coding Test Result
In my test, DeepSeek generated approximately 900+ lines of code for the QR Code Generator.
The generated project included:
- Modern responsive UI
- HTML, CSS, and JavaScript
- Text/URL input
- QR code generation
- Functional Generate QR button
After accepting and saving the generated code, I opened the HTML file in the browser and tested it. The QR Code Generator worked successfully.
Why Use DeepSeek V4 Flash in VS Code?
Using an AI model directly inside VS Code can make development much faster. You can use it to generate code, fix errors, explain code, refactor projects, build UI components, and create complete prototypes without constantly switching between your browser and code editor.
Important Note
The free access demonstrated in this tutorial was available at the time of recording. Free models, usage limits, credits, and pricing can change, so always check the provider’s latest policies.
Final Thoughts
That’s how you can use DeepSeek V4 Flash for free inside VS Code. The setup is simple, and our real-world QR Code Generator test showed that the model can generate a complete working web application from a single prompt.
If you found this tutorial helpful, check out the GeekyBeginners YouTube channel for more tutorials about AI coding tools, programming, web development, and free developer resources.
Happy Coding! 🚀