Build a powerful AI coding assistant using Ollama, Continue.dev, Qwen3-Coder, and VS Code — completely free, private, and local.
The Problem
Like many developers, I rely heavily on AI while coding.
Whether it's:
- Generating React components
- Refactoring TypeScript code
- Creating APIs
- Writing unit tests
- Understanding unfamiliar codebases
AI has become part of my daily workflow.
The downside?
Most popular AI coding assistants require a subscription.
| Tool | Monthly Cost |
|---|---|
| Cursor Pro | $20 |
| GitHub Copilot | $10 |
| Windsurf Pro | $15 |
For a single developer, that's manageable.
For a team, it becomes expensive quickly.
So I started asking:
Can I build my own AI coding assistant that runs entirely on my machine and costs nothing?
The answer surprised me.
Yes.
And it's much better than I expected.
🏗 Final Architecture
VS Code
↓
Continue.dev
↓
Ollama
↓
Qwen3-Coder
What You'll Build
By the end of this tutorial you'll have an AI coding assistant capable of:
✅ Code Generation
✅ Refactoring
✅ Unit Test Creation
✅ Project-Aware Context
✅ Local Processing
✅ Offline Usage
✅ Complete Privacy
✅ $0 Monthly Cost
Why Local AI Is Exploding
A few years ago, local coding models were difficult to use and often produced poor results.
That's no longer true.
Modern models like:
- Qwen3-Coder
- DeepSeek-Coder
- CodeLlama
are surprisingly capable.
For React, TypeScript, Node.js, and backend development, they handle most day-to-day tasks extremely well.
The biggest benefit?
Your code never leaves your machine.
Step 1: Install Ollama
Think of Ollama as Docker for AI models.
Download and install:
Verify installation:
ollama --version
Step 2: Install Qwen3-Coder
Pull the model:
ollama pull qwen3-coder
Alternative models:
ollama pull deepseek-coder-v2
ollama pull codellama
Step 3: Test the Model
Launch:
ollama run qwen3-coder
Try:
Create a reusable React hook for debouncing user input.
If you receive generated TypeScript code, you're ready.
Step 4: Install Continue.dev
Install Continue.dev inside VS Code.
Continue acts as the bridge between your editor and the local model.
Features:
- AI Chat
- Code Generation
- File Editing
- Project Search
- Context Awareness
Step 5: Connect Continue to Ollama
Open Continue configuration.
Add:
{
"models": [
{
"title": "Qwen3-Coder",
"provider": "ollama",
"model": "qwen3-coder"
}
]
}
Restart VS Code.
Done.
You now have a local AI coding assistant.
🚀 Using It Like Cursor
Here are some prompts I use daily.
Generate Components
Create a reusable React DataTable component using TypeScript and Tailwind CSS.
Generate APIs
Create an Express CRUD API using PostgreSQL and TypeScript.
Refactor Code
Convert this React class component to a functional component using hooks.
Generate Tests
Write Jest and React Testing Library tests with high coverage.
Explain Code
Explain this file and identify performance issues.
🎬 Real Demo
Prompt:
Create a reusable React DataTable component with:
- TypeScript
- Tailwind CSS
- Sorting
- Filtering
- Pagination
Generated:
✅ Full Component
✅ TypeScript Types
✅ Search Functionality
✅ Sorting
✅ Pagination
✅ Responsive UI
Generated locally in seconds.
📊 Cursor vs Local AI Setup
| Feature | Cursor | Local Setup |
|---|---|---|
| Monthly Cost | $20 | $0 |
| Offline Mode | ❌ | ✅ |
| Privacy | Cloud | Local |
| React Development | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| TypeScript | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| API Development | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Unit Testing | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| Custom Models | Limited | Unlimited |
Real-World Results
After using this setup for over a month:
What Worked Well
✅ React
✅ Next.js
✅ TypeScript
✅ Node.js
✅ Express
✅ PostgreSQL
✅ Unit Testing
Where It Struggled
❌ Large repositories
❌ Complex architectural decisions
❌ Slightly slower responses than cloud models
Hardware Used
CPU: Intel i7-13700H
RAM: 32GB
GPU: RTX 4060 (8GB)
OS: Windows 11
Model: Qwen3-Coder
Minimum recommendation:
16GB RAM
Modern CPU
Optional GPU
Common Mistakes
Using Tiny Models
Small models generate weaker code.
Use:
Qwen3-Coder
whenever possible.
Ignoring Project Context
Bad Prompt:
Create a login page.
Good Prompt:
Analyze my authentication architecture and generate a login page that follows existing patterns.
The results are dramatically better.
Enterprise Benefits
Most developers focus on cost savings.
The bigger advantage is privacy.
Cloud Workflow
Your Code
↓
External Servers
↓
AI Processing
Local Workflow
Your Code
↓
Your Machine
↓
AI Processing
For many organizations, that difference matters.
Cost Breakdown
| Item | Cost |
|---|---|
| VS Code | Free |
| Ollama | Free |
| Qwen3-Coder | Free |
| Continue.dev | Free |
| Total | $0 |
Annual savings compared to Cursor:
$240+
For a team of 10 developers:
$2,400+
Future Upgrades
Once you have this setup working, you can add:
Code Review Agent
Automatically reviews pull requests.
Test Generation Agent
Creates unit and integration tests.
Documentation Agent
Generates technical documentation.
Security Agent
Finds common vulnerabilities.
Bug Hunter Agent
Identifies performance bottlenecks.
Using frameworks like:
- LangGraph
- CrewAI
you can evolve this into a full AI software engineering team.
Final Verdict
Would I completely replace Cursor?
For React, TypeScript, Node.js, Next.js, and most full-stack development tasks:
Yes.
The combination of:
- VS Code
- Continue.dev
- Ollama
- Qwen3-Coder
provides a surprisingly capable AI coding assistant that:
✅ Runs Locally
✅ Protects Your Code
✅ Works Offline
✅ Costs Nothing
The gap between local AI and cloud AI is shrinking fast.
And for many developers, local AI is already good enough.
What About You?
Would you rather use:
Cursor Pro ($20/month)
or
Local AI Setup ($0/month)
Let me know your thoughts in the comments.
👇👇👇




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