What is Devin?
Devin is an autonomous AI software engineer from Cognition AI. You assign it a task the way you would a junior engineer, and it works in its own cloud environment with a shell, code editor, and browser, then opens a pull request with what it built.
It is designed to run asynchronously and in parallel: you delegate from Slack, the web app, or an IDE integration, and several Devin sessions can work at once while you review the results.
Devin is best for well-scoped, repetitive, or parallelizable engineering work where the cost of an autonomous agent is justified by the time it saves. It still needs human review, so treat its output as a draft pull request, not a finished merge.
What it's best for
- Well-scoped tasks: bug fixes, small features, migrations, and test coverage.
- Parallel work, where several Devin sessions run at once on independent tickets.
- Teams that want to delegate from Slack or the IDE and review pull requests later.
- Repetitive engineering toil that is tedious for a person but easy to specify.
Where it falls short
- Large, ambiguous, or architecture-defining work that needs sustained human judgment.
- Teams that cannot review autonomous changes carefully before merging.
- Cost-sensitive solo use, where a code-completion tool may give better value.
Ways in
Assign work from the web app, the Slack integration, or an IDE plugin. Devin spins up its own environment, so you hand it a task and a repository rather than a local session.
Give it the context a new teammate would need: the goal, the relevant files or tickets, and how to verify success (for example, which tests must pass).
Getting the most out of it
Scope tasks tightly. Devin does best on clear, bounded work with an obvious done state, and struggles on open-ended problems.
Always review the pull request. Treat Devin as an autonomous junior engineer whose work is a draft for human review, not an automatic merge.
What Devin costs
Approximate, in USD, as of June 2026. Prices change often. Confirm on the official site before you rely on them.
Core
Usage-based
Pay-as-you-go by compute units consumed per task, with a low entry point. Confirm current rates on the official site.
Team
Subscription + usage
Per-seat plan with included usage for teams. Confirm current pricing on the official site.
Example prompts
Copy these into Devin as starting points, then adapt them to your task.
This issue describes a bug with a failing test. Reproduce it, fix the root cause, make the test pass without breaking the others, and open a PR explaining the change.
Migrate every call site of this deprecated function to the new API across the repository. List the files changed and confirm the build and tests pass.
Add unit tests for this module, covering the edge cases listed in the doc comment, and report the coverage before and after.
Devin
common questions.
Direct answers to the questions we get asked the most. If yours isn't covered, write to the team.