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Devin

Autonomous software engineer that works whole tasks unsupervised.

Price: Core from $20/month with ACU-based usage (around $2.25/ACU). Team $500/month with 250 ACUs included. Enterprise on quote.
Platforms: Web
Free plan: no
API available: yes
Open source: no
Available in Spanish: no

We review pricing and features regularly, but check them on the official site before subscribing. How we review.

What is Devin?

Devin, from Cognition, was presented as the first AI software engineer: it works inside a virtual machine with its own browser and terminal, and you assign it tasks like a teammate rather than an autocomplete. It plans, writes, tests and opens the pull request. After launching at a prohibitive $500/month, in 2026 it dropped to a $20 individual plan.

Pros

  • Works complete tasks without constant supervision
  • Its own environment with browser and terminal: it never touches your machine
  • Dropped 96% in price: entry at $20/month
  • Fits into the team workflow by opening pull requests

Cons

  • ACU usage escalates quickly on long tasks
  • It fails on ambiguous or poorly specified problems
  • English-only interface and a focus on technical teams

What Devin is like in practice

Where it stands out

It presents itself as a teammate rather than a tool: it takes a task, works autonomously for hours, opens its own branch and submits the result for review. For large, well-scoped tasks — migrations, dependency updates, covering a module with tests — that level of autonomy is rare.

Where it falls short

Autonomy carries an underestimated cost: reviewing what an agent did for two hours is a serious task, and code that compiles and looks correct is the most dangerous kind. With poorly defined tasks or projects full of implicit conventions, the result drifts and has to be redone.

How its pricing works

It sits at the premium end, well above assistance tools, and its natural customer is a team that can weigh that cost against development hours. Before considering it, try a terminal agent included in a subscription you already have: it covers much of the same ground.

Is Devin right for you?

Yes, if…

You want to delegate well-scoped, clearly described coding tasks: it works in its own virtual machine, never touching yours, and opens the pull request when done. Entry is now $20/month.

No, if…

Your tasks are ambiguous or exploratory: it gets lost there. And ACU consumption spikes on long jobs, so the real cost can far exceed the base fee.

Frequently asked questions

How much does Devin cost?

The Core plan starts at $20/month with ACU-based usage (compute units, around $2.25 each). The Team plan costs $500/month and includes 250 ACUs.

What is an ACU?

Devin's usage unit: it measures the compute work it puts into a task. Long or complex tasks consume far more.

Does it replace a developer?

No. It performs well on well-scoped, clearly described tasks, but gets lost on ambiguous problems. It works better as a boost to the team than as a replacement.

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