Aider vs Replit Agent: Side-by-Side Comparison 2026
Aider vs Replit Agent comparison 2026. Side-by-side features, pricing & capabilities.
| Feature | Aider | Replit Agent |
|---|---|---|
| Category | Agent | Builder |
| Starting Price | Free | Free |
| Model Family | Multi-model (any) | Proprietary |
| Context Window | Depends on model | Not disclosed |
| Code Completion | ✗ | ✓ |
| Chat | ✓ | ✓ |
| Inline Editing | ✗ | ✓ |
| Agentic Mode | ✓ | ✓ |
| Multi-File Editing | ✓ | ✓ |
| Terminal Commands | ✓ | ✓ |
| Browser Use | ✗ | ✗ |
| Test Generation | ✓ | ✓ |
| Debugging | ✓ | ✓ |
| Refactoring | ✓ | ✓ |
| Code Review | ✗ | ✗ |
| PR Review | ✗ | ✗ |
| Documentation | ✗ | ✓ |
| Image to Code | ✗ | ✗ |
| Voice Input | ✓ | ✗ |
| App Generation | ✗ | ✓ |
| Deployment | ✗ | ✗ |
| Git Integration | ✗ | ✓ |
| Supported IDEs | Terminal (editor-agnostic) | Replit IDE (browser), SSH sync |
| Open Source | Yes (Apache 2.0) | No |
Pricing verified 2026-02-05. Aider pricing | Replit Agent pricing
Overview
Aider is ai agent from Paul Gauthier (Open Source). Replit Agent is app builder from Replit. Both tools are actively maintained as of 2026.
Aider: What You Get
Open-source CLI tool for AI pair programming. Works with OpenAI, Claude, and other models to edit code in your local git repo.
- Git-aware editing
- Multi-file editing
- Model agnostic
- Voice coding
- Image support
- Linting integration
Pricing: Free. 1 plan available.
Models: Claude 3.5 Sonnet, GPT-4o, GPT-4, Gemini, DeepSeek, Groq, local (Ollama), any OpenAI-compatible
Replit Agent: What You Get
Cloud-based IDE and app platform with an AI assistant that can build, debug, and deploy applications directly in the browser.
- Browser-based IDE
- AI assistant
- Multiplayer coding
- One-click deploy
- Database integration
- Package management
Pricing: Free / $20/mo. 3 plans available.
Models: Replit Agent 3 (proprietary)
Key Differences
- Category: Aider is ai agent, Replit Agent is app builder.
- Model family: Aider uses Multi-model (any); Replit Agent uses Proprietary.
Which Should You Choose?
Choose Aider if you want Fully open-source with transparent development. Choose Replit Agent if you want Best platform for learning to code with AI. Both tools are strong options — the right choice depends on your workflow and priorities.
Stay in the loop
Get weekly insights on the best AI coding tools, tips, and tutorials.
Newsletter coming soon. Unsubscribe anytime.