Aider
Devin
| Feature | Aider | Devin |
|---|---|---|
| Pricing | Free only | From $20/mo |
| Free Plan | ✓ Yes | ✗ No |
| Rating | 4.5 / 5 | 4 / 5 |
| Best For | developers, open-source-contributors, terminal-users, pair-programmers | engineering-teams, enterprise-developers, code-maintenance, automated-testing |
| Founded | 2023 | 2024 |
| Multi File Editing | ✓ | ✗ |
| Git Integration | ✓ | ✗ |
| Voice Mode | ✓ | ✗ |
| Image Input | ✓ | ✗ |
| Linting | ✓ | ✗ |
| Testing Integration | ✓ | ✗ |
| Autonomous Coding | ✗ | ✓ |
| Planning | ✗ | ✓ |
| Debugging | ✗ | ✓ |
| Deployment | ✗ | ✓ |
| Code Review | ✗ | ✓ |
| Testing | ✗ | ✓ |
| Slack Integration | ✗ | ✓ |
✓ Aider Pros
- Works with any LLM (Claude, GPT-4, local)
- Edits code directly in your repo
- Automatic git commits
- Voice coding support
✗ Aider Cons
- Terminal-only (no GUI)
- Requires API keys (costs per token)
- Can make incorrect edits on complex tasks
✓ Devin Pros
- Truly autonomous (handles multi-step engineering tasks)
- Own environment with terminal, browser, and code editor
- Can learn from documentation and unfamiliar codebases
- Handles real GitHub issues and PRs independently
✗ Devin Cons
- No free tier
- ACU costs add up on complex tasks
- Output quality varies by task complexity
- Team plan expensive at $500/month
The Verdict
Aider is built for developers and open source contributors, with a focus on multi-file-editing and git-integration. Devin targets engineering teams and enterprise developers and leads with autonomous-coding and planning.
Aider uses custom enterprise pricing, while Devin starts at $20/mo — a tangible advantage for teams with a fixed budget.
Aider has a free plan, which gives it a meaningful edge for individuals and small teams exploring their options. Devin requires a paid subscription from day one.
Aider edges out on user ratings (4.5 vs 4). While both are well-regarded, that gap reflects real differences in user satisfaction worth considering.
Feature-wise, Devin offers broader built-in capabilities (7 features vs 6), while Aider takes a more focused approach — which can mean a simpler, faster onboarding experience.
Bottom line: Aider has a slight overall edge — but if truly autonomous (handles multi-step engineering tasks) matters most to you, Devin may still be the right call.