What is Devin AI? The autonomous coding agent from Cognition

What is Devin AI?

Devin is an AI agent that writes, runs and tests code on its own. Cognition's docs describe it as an autonomous AI software engineer that "can handle most tasks, excluding extremely difficult tasks", with a rule of thumb: if you could do it in three hours, Devin can most likely do it.

What sets it apart from an AI code editor is where it works. Devin has its own computer in the cloud. It reads your repository, runs commands in its own shell, edits in its own IDE, and opens your app in its own browser to check the result. You can watch any of those as it works, or step in and take over.

Devin is now the name of a family of tools. On June 2, 2026, Cognition brought them under one brand:

When people search "Devin AI", they usually mean Devin Cloud, the agent you hand tasks to.

Who makes Devin AI?

Cognition makes Devin, and Cognition owns it. The company says it started in January 2024, and its about page puts its headquarters in San Francisco. Scott Wu is Cognition's co-founder and CEO, and he wrote the post that introduced Devin in March 2024.

The same about page says Cognition's founding team holds 10 IOI gold medals, the top awards at the International Olympiad in Informatics, and includes people from Google DeepMind, Scale AI, Cursor, Waymo and Nuro. A few dates from Cognition's own posts show how fast it has grown:

How does a Devin task run?

A Devin task is called a session, and it starts with a written request. Here's how one goes, based on Cognition's first session guide and testing docs.

Before the first session, you connect a repository on GitHub, GitLab or Bitbucket and set up Devin's environment, so its machine boots with your dependencies and secrets ready. Then you describe the task in the web app, in a Slack or Microsoft Teams thread, or by assigning a Linear or Jira ticket.

Cognition suggests starting in Ask mode when the task isn't fully scoped. Ask mode searches your code and helps you write a plan without changing anything. When the plan is ready, you send it to Agent mode, where Devin writes the code. You pick an agent for the session: Lite for simple tasks, Normal by default, Ultra for the hardest ones, Fusion, which pairs a frontier model with a cost-efficient one, or SWE-2, Cognition's own model.

Devin then works through the task in its machine and opens a pull request. After that, it offers to test the app. It writes a short test plan, runs the main flow in its browser, and sends you a screen recording with notes on what it checked. With Devin Review's auto-fix turned on, it also answers review comments and fixes failing CI.

If you stop replying, the session sleeps after 30 minutes and stops using your quota until you send another message.

Is Devin AI really a software engineer?

Cognition markets Devin as an AI software engineer, and its own numbers are more modest than the label. In its 2025 performance review, Cognition says 67% of Devin's pull requests were merged, up from 34% the year before. The same post lists "independent execution on ambiguous requirements" as an area where Devin still needs to improve.

That makes it a good fit for clear, well-scoped work, and Cognition's docs say the same: Devin does best on tasks with explicit success criteria, such as passing tests or a green CI run, and big projects should be split into smaller sessions.

How much does Devin AI cost?

Devin costs $0 to $200 a month for one person, and Teams starts at $80 a month. These are the plans on devin.ai/pricing:

Each paid plan has a daily and weekly usage quota, or weekly only on Max, and past it you buy extra usage at API pricing. Devin pricing explains the quota, the Teams seats and how Devin Desktop is billed.

Who is Devin AI for?

Devin suits teams with a steady backlog of clear tickets. Cognition's docs list the jobs it's best at: Linear and Jira tickets, bug reports, migrations and refactors, framework upgrades, unit tests and documentation. Its customers include large companies such as NVIDIA, Citi and Mercedes-Benz, according to Cognition's Series E post.

For one developer, Pro at $20 a month is enough to try it on real work. Devin is a weaker fit if your tasks are vague and need a lot of back and forth, because that's the case Cognition itself says Devin handles least well.

Where Buildful fits

Buildful is a background coding agent that works the way Devin Cloud does. You describe a task, such as a bug fix or a new feature, and it works in a private cloud sandbox on your GitHub repo, runs your checks, tests UI changes in a real browser, and opens a pull request for you to review.

The difference is in how usage is counted and how models are picked. Devin's plans buy a quota that Cognition doesn't put a number on, and Buildful sells a count of tasks. Smart Mode picks the right open-weight model for each task, and on Pro and Team you can pick a frontier model like Claude or GPT yourself, with prepaid credit or your own API key. Buildful Pro is $10 a month for 1,000 tasks, or ₹750 in India, and Team is $40 a month for 3,000 tasks shared by unlimited members (₹3,500 in India). See Buildful vs Devin for the two side by side.

Frequently asked questions

Who owns Devin AI?

Cognition owns Devin AI. It's a San Francisco company that started in January 2024, and its investors include Founders Fund, Andreessen Horowitz and Accel. Cognition also owns Windsurf, which it renamed Devin Desktop in June 2026.

Who is the founder of Devin AI?

Scott Wu is a co-founder of Cognition, the company that makes Devin, and its CEO. He wrote the post that introduced Devin on March 12, 2024. Cognition says its founding team holds 10 IOI gold medals.

Is Devin AI free?

There's a Free plan at $0 with a light quota and limited models. Cognition's pricing page lists Devin Cloud, the agent that works in its own machine, from Pro at $20 a month.

Is Devin the same as Windsurf?

Not quite. Windsurf was an AI code editor that Cognition bought in 2025 and renamed Devin Desktop on June 2, 2026. Devin is the agent that works in the cloud. Both now share one quota on Devin's Pro, Max and Teams plans.

What can Devin AI do?

Devin can fix bugs, build features, work through Linear and Jira tickets, run migrations and refactors, write tests and keep docs up to date. It works in its own machine, opens a pull request, and can record a video of itself testing the change.

Can anyone use Devin AI?

Yes. Devin has been generally available since December 10, 2024, and anyone can sign up at app.devin.ai. Pro and Max are for one person each, and Teams is for up to 200 members.