Devin vs Aider
Side-by-side comparison of Devin and Aider — features, pricing, and trade-offs.
| Devin | Aider | |
|---|---|---|
| Tagline | Cognition's autonomous AI software engineer. | Open-source AI pair programmer in your terminal. |
| Pricing model | paid | free |
| Lowest paid tier | $20/mo | Free |
| Launched | 2024 | 2023 |
| Best for | async delegation, ticket triage, Slack-native teams | OSS lovers, model agnostic workflows |
| Top features | Async agent, Slack/Linear integration, Multi-task | Open source, Git-aware, Multi-model (Claude, GPT, local) |
Devin
Cognition's autonomous AI software engineer.
- + Truly autonomous
- + Async — works while you sleep
- + Strong on smaller tickets
- − Expensive at scale
- − Quality varies on complex tasks
Aider
Open-source AI pair programmer in your terminal.
- + Free
- + Bring-your-own model
- + Privacy-friendly
- − Less polished UX
- − Setup overhead