Free Alternatives to Cursor

Free Alternatives to Cursor AI IDE: Open-Source and Budget-Friendly Options

Cursor Pro costs $20 per month, which may not fit every developer's budget. Fortunately, several excellent free alternatives provide AI-powered coding assistance with comparable capabilities. Some are fully open source, while others offer generous free tiers. This guide covers the best options and how to set them up.

1. Cline (VS Code Extension) — Free and Open Source

Cline is a free, open-source VS Code extension that provides an autonomous AI coding agent directly in your editor. It can edit files, run terminal commands, and iterate on its work — similar to Cursor's Agent mode.

• Cost: Free (you provide your own API key)
• Models: Supports Claude, GPT, Gemini, and any OpenAI-compatible API
• Key feature: Full agentic capabilities with file editing, terminal access, and browser use
• Setup: Install from the VS Code marketplace, configure your API key

// Cline configuration for a relay service:
// 1. Install Cline from VS Code Extensions
// 2. Select "OpenAI Compatible" as provider
// 3. Set Base URL: https://claude4u.com/v1
// 4. Enter your relay API key
// 5. Set model name (e.g., claude-sonnet-4-20250514)

2. Roo Code (VS Code Extension) — Free and Open Source

Roo Code is another powerful free VS Code extension that provides AI-assisted coding with a focus on flexibility and customization. It supports custom modes, MCP tools, and multiple model providers.

• Cost: Free (bring your own API key)
• Models: Claude, GPT, Gemini, DeepSeek, Mistral, and OpenAI-compatible APIs
• Key feature: Custom AI modes for different coding tasks, extensive tool support
• Setup: Install from VS Code marketplace, configure provider and API key

3. Continue (VS Code / JetBrains Extension) — Free and Open Source

Continue is an open-source AI coding assistant that works with both VS Code and JetBrains IDEs. It offers tab completion, chat, and inline editing capabilities.

• Cost: Free (bring your own API key or use free models)
• Models: Supports all major providers and local models via Ollama
• Key feature: Works with JetBrains IDEs, which Cursor does not support
• Setup: Install from the marketplace, edit config.json with your provider details

// Continue config.json for custom API endpoint
{
  "models": [
    {
      "title": "Claude via Relay",
      "provider": "openai",
      "model": "claude-sonnet-4-20250514",
      "apiBase": "https://claude4u.com/v1",
      "apiKey": "your-relay-api-key"
    }
  ]
}

4. Windsurf IDE — Free Tier Available

Windsurf (formerly Codeium) is an AI-native IDE similar to Cursor with its own free tier. It provides autocomplete, chat, and an AI agent called Cascade.

• Cost: Free tier available with limited premium requests; Pro at $15/month
• Models: Built-in model access; supports custom API configuration
• Key feature: Cascade agent for multi-step coding tasks
• Limitation: Less model flexibility than Cline or Roo Code on the free tier

5. Aider — Free and Open Source CLI Tool

Aider is a command-line AI pair programming tool that works directly with your git repository. It is entirely free and open source.

• Cost: Free (bring your own API key)
• Models: Claude, GPT, Gemini, DeepSeek, local models
• Key feature: Git-native workflow — all changes are automatically committed
• Best for: Developers who prefer terminal-based workflows

# Install and run Aider
pip install aider-chat

# Use with a relay service
aider --openai-api-base https://claude4u.com/v1 \
      --openai-api-key your-relay-key \
      --model claude-sonnet-4-20250514

6. Local Models with Ollama

For developers who want complete privacy and zero API costs, running models locally with Ollama is an option. While local models are less capable than cloud models, they are sufficient for many tasks:

• Cost: Completely free (runs on your hardware)
• Models: Llama, CodeLlama, DeepSeek Coder, Qwen, and many others
• Key feature: Full privacy — no code leaves your machine
• Limitation: Requires a capable GPU; quality is lower than cloud models

Cost Comparison

Recommendation

For the best free alternative to Cursor, Cline or Roo Code combined with a cost-effective relay service like claude4u.com provides comparable functionality at a fraction of the cost. You get agent mode capabilities, multi-model support, and the familiar VS Code environment. The main trade-off is that you pay per-API-call rather than a flat subscription, which is actually cheaper for moderate usage levels.