Devin and Replit both promise to write and ship code for you, but they sit at opposite ends of the autonomy spectrum. Devin is a fully autonomous AI software engineer you delegate whole tasks to. Replit is a cloud IDE where its Agent builds alongside you and deploys in the same place. Choosing in 2026 comes down to how much you want to hand off versus stay in the loop — and how the very different pricing models fit your budget.
Quick Comparison
| Devin | Replit | |
|---|---|---|
| Model | Autonomous AI engineer | Cloud IDE + AI Agent |
| Paid entry | Core $20 (pay-as-you-go) | Core $20/mo (credits included) |
| Billing | Per ACU ($2.25 each on Core) | Monthly credits |
| Deploys your app | Hands work back as PRs | Builds + hosts in one place |
| Best for | Delegating defined tasks | Solo builders shipping apps |
Devin: The Autonomous Engineer
Devin is built to take a ticket and run with it — planning, writing, testing, and opening a pull request with minimal supervision. You assign work the way you’d assign it to a junior engineer, then review the result.
- Core ($20): entry tier with pay-as-you-go billing at $2.25 per ACU and a 10-concurrent-session cap
- Team ($500/mo): 250 ACUs at $2.00 each, unlimited concurrent sessions, early features
- Enterprise: custom
An ACU (Agentic Computing Unit) is Devin’s unit of work — roughly 15 minutes of active autonomous effort. That makes cost task-dependent: small fixes are cheap, while large multi-file features burn ACUs fast. See the full breakdown in our Devin pricing guide.
Replit: Build and Ship in One Place
Replit keeps you in the driver’s seat. Its Agent scaffolds, edits, and debugs inside a browser IDE, then deploys to always-on hosting without leaving the platform.
- Starter (Free): browser IDE, 50+ languages, short Agent tasks
- Core ($20/mo): $20 of usage credits, uninterrupted Agent runs, always-on deploys
- Pro ($100/mo flat): for teams up to ~15
- Enterprise: custom
Replit dropped Core from $25 to $20 in late 2025. Unlike Devin’s per-ACU model, you get a flat monthly credit pool. Details in our Replit pricing breakdown and Replit free vs paid guide.
Pricing Showdown
| Scenario | Devin | Replit |
|---|---|---|
| Hobby / learning | Pay-as-you-go from $20 | Free (Starter) |
| Solo builder | $20 + ACU usage | $20/mo (Core) |
| Heavy autonomous work | $500/mo (Team) | $30–50 (Core + credits) |
| Small team (≤15) | $500/mo | $100/mo flat (Pro) |
For predictable solo costs, Replit’s flat credits are easier to budget. For delegating defined engineering tasks at scale, Devin’s Team plan removes session limits.
Which Should You Choose?
- Want to delegate whole tickets and review PRs? Devin.
- Want to build interactively and deploy instantly? Replit.
- On a tight budget, just learning? Replit’s free Starter wins.
- Running many autonomous tasks in parallel? Devin Team ($500) lifts the session cap.
- Shipping 1–2 solo apps a month? Replit Core at $20 is the sweet spot.
Verdict
Devin replaces the work; Replit accelerates yours. If your goal is to hand off well-defined tasks and get back reviewable pull requests, Devin’s autonomous model earns its ACU costs. If you want a single place to build, preview, and host with an AI pair-builder, Replit is faster and cheaper for solo work. Many developers keep Replit for rapid prototyping and reach for Devin on backlog tickets. Also compare Devin vs Cursor and Replit vs GitHub Copilot.
FAQ
Is Devin or Replit cheaper? Replit’s $20 Core is more predictable; Devin starts at $20 but bills per ACU on top, so heavy use costs more.
Does Replit deploy my app? Yes — Replit includes always-on hosting on Core. Devin hands back code/PRs for you to deploy.
What is an ACU on Devin? An Agentic Computing Unit, roughly 15 minutes of active autonomous work, priced at $2.25 (Core) or $2.00 (Team).
Can I use both? Yes — many builders prototype in Replit and delegate backlog tasks to Devin.
Still deciding between AI coding tools? Compare Devin, Replit, and Cursor side by side →