Devin and Windsurf represent two philosophies of AI coding in 2026. Devin is a fully autonomous AI engineer you delegate entire tasks to and review later. Windsurf (formerly Codeium) is a local agentic IDE where its Cascade agent works with you in real time. The decision is really about control: how much do you want to hand off versus stay hands-on — and how their very different pricing models fit your work.
Quick Comparison
| Devin | Windsurf | |
|---|---|---|
| Model | Autonomous AI engineer | Local agentic IDE |
| You work | Delegate, then review PRs | In the editor, in real time |
| Paid entry | Core $20 + ACU usage | Pro $20/mo |
| Billing | Per ACU ($2.25 each) | Daily/weekly quotas |
| Best for | Offloading defined tasks | Hands-on agentic coding |
Devin: Delegate the Whole Task
Devin takes a ticket and runs it end to end — planning, coding, testing, and opening a pull request with minimal oversight:
- Core ($20): pay-as-you-go at $2.25/ACU, up to 10 concurrent sessions
- Team ($500/mo): 250 ACUs at $2.00 each, unlimited sessions
- Enterprise: custom
An ACU ≈ 15 minutes of active autonomous work, so cost scales with task size. There’s no free tier — see our Devin pricing guide and Devin free vs paid breakdown.
Windsurf: Code With the Agent
Windsurf keeps you in the loop. Its Cascade agent edits, refactors, and reasons inside a desktop IDE while you steer:
- Free: 25 prompt credits/month, 5 Cascade sessions/day, unlimited Tab autocomplete
- Pro ($20/mo): unlimited Cascade within quota, all models
- Pro Plus ($35/mo): priority flagship-model access
- Teams ($40/user)
Windsurf moved to a quota model (and Pro to $20) in March 2026. Full details in Windsurf free vs paid.
Pricing Showdown
| Scenario | Devin | Windsurf |
|---|---|---|
| Free trial | None | Free (5 Cascade/day) |
| Solo developer | $20 + ACU usage | $20/mo (Pro) |
| Heavy daily use | $100–500 (ACUs/Team) | $35 (Pro Plus) |
| Team | $500/mo | $40/user (Teams) |
For predictable monthly cost, Windsurf’s flat quota wins easily. Devin’s value is autonomy at scale, not low price.
Which Should You Choose?
- Want to hand off whole tickets? Devin.
- Want to code alongside the agent? Windsurf.
- Need a free way to start? Windsurf — Devin has no free tier.
- Running many parallel autonomous tasks? Devin Team ($500) removes the session cap.
- Daily hands-on coding on a budget? Windsurf Pro at $20.
Verdict
Devin works for you; Windsurf works with you. If your goal is to delegate defined engineering tasks and review the output as PRs, Devin’s autonomy justifies its ACU costs. If you want a fast, controllable agent inside your local IDE without surprise bills, Windsurf is cheaper and more predictable. Many teams use Windsurf for daily development and reserve Devin for backlog tickets. Also compare Devin vs Cursor and Devin vs Claude Code.
FAQ
Is Devin or Windsurf cheaper? Windsurf — Pro is a flat $20/mo, while Devin charges $20 plus per-ACU usage.
Does Windsurf work autonomously like Devin? Partly — Cascade is agentic but stays in your IDE under your direction; Devin runs tasks end to end on its own.
Does Devin have a free plan? No. Windsurf does (5 Cascade sessions/day plus unlimited autocomplete).
Can I use both? Yes — code daily in Windsurf and delegate larger, well-scoped tickets to Devin.
Still deciding between AI coding tools? Compare Devin, Windsurf, and Cursor side by side →