AI coding · Head to head
Aider vs Devin: which is better?
Short answer
Aider costs less in the first year ($0 vs $240). Pick Aider for open-source terminal pair programming; pick Devin for autonomous cloud coding agent.
| Fact | Aider | Devin | Edge |
|---|---|---|---|
| Best for | Open-source terminal pair programming | Autonomous cloud coding agent | — |
| Free plan | Yes, open source, bring your own API key | Yes, light quota, unlimited Tab | Tie |
| Entry plan | — | Pro: $20 / mo | — |
| Mid plan | — | Max: $200 / mo | — |
| Top plan | — | Max: $200 / mo | — |
| 1st year | $0 | $240 | Aider |
| Platforms | macOS, Linux, Windows | Web, macOS, Windows, Linux | Devin |
Edge = the better published number or limit; we do not test the tools hands-on.
Which has the better free plan, Aider or Devin?
Neither stands out: Aider: Yes, open source, bring your own API key; Devin: Yes, light quota, unlimited Tab.
Should you pick Aider or Devin?
Pick Aider if
- you want open-source terminal pair programming
- the free plan is enough (open source, bring your own API key)
Pick Devin if
- you want autonomous cloud coding agent
- the free plan is enough (light quota, unlimited Tab)
Sources
| Vendor page | URL | Checked |
|---|---|---|
| Aider pricing | aider.chat/ | 27 Oct 2026 |
| Devin pricing | devin.ai/pricing | 27 Oct 2026 |
Prices in USD as published by each vendor, billed yearly where offered. How we compare