Devin
Visit Devin →About Devin
Devin is an autonomous coding agent built by Cognition. Rather than sitting inside your editor as a copilot, it works more like a remote engineer: you assign it a task, and it spins up its own cloud workspace with a shell, browser and code editor to plan the work, make changes across the repo, run tests and open a pull request.
The current numbered release is Devin 2.2, published February 24, 2026, which brought faster session startup, full desktop and computer-use testing, automated code review and a redesigned lifecycle UI. Devin now runs the Devin Fusion architecture, announced June 2026, which pairs frontier models with cheaper 'sidekick' agents; Cognition describes it as up to 39% more efficient than other model harnesses. The Devin Security Swarm, added in July 2026, finds, validates and fixes vulnerabilities. Cognition has also shipped Devin Desktop, launched June 2, 2026 and positioned as the next generation of its Windsurf product, adding Devin Cloud, an Agent Command Center and a full IDE.
In practice Devin is best at well-scoped, parallelizable work: bug fixes, refactors, migrations, test writing, small features and codebase Q&A. You can run several Devin sessions at once, and it integrates with Slack, GitHub and IDEs so you can hand off tasks and review the resulting PRs.
Pricing runs in self-serve tiers. Free is $0 with a light agent quota, limited model availability, and unlimited inline edits and Tab completions. Pro is $20 per month with larger quotas and access to models from OpenAI, Claude, Gemini and SpaceXAI plus open-source models. Max is $200 per month for higher quotas. Teams is $80 per month base plus $40 per month per developer seat, supporting up to 200 users with an admin dashboard and centralized billing. Enterprise is custom, with release notes still referencing Agent Compute Unit (ACU) consumption.
The limitations are the usual autonomous-agent ones: it can burn through quota on ambiguous tasks, sometimes goes down the wrong path and needs redirection, and large or messy codebases still require careful task scoping and human review before merging. Many third-party blogs still quote older ACU-only pricing, which the current official pricing page no longer shows for self-serve tiers.
Devin suits teams that want to offload routine engineering work to a fleet of parallel agents and are comfortable reviewing PRs, as well as individual developers who want to try autonomous coding on the free tier before committing to a paid plan.
- Fully autonomous: plans, edits across files, runs tests and opens PRs from a single task description
- Runs multiple sessions in parallel and integrates with Slack, GitHub and IDEs for easy hand-off
- Free tier plus a $20/month Pro plan make it accessible without an enterprise contract
- Devin Fusion architecture pairs frontier models with cheaper sidekick agents for improved efficiency
- Devin 2.2 adds desktop/computer-use testing and automated code review; Security Swarm handles vulnerability fixing
- Can consume quota or credits quickly on vague or open-ended tasks
- Still needs human review and sometimes redirection when it takes a wrong approach
- Enterprise ACU billing can get expensive and is harder to predict
- Large, messy codebases require careful task scoping to get good results
- Confusing pricing landscape: many third-party sources still cite outdated ACU-only tiers
Choose Devin if…
- You want an autonomous agent to handle bug fixes, refactors and migrations end-to-end
- You need to run several coding tasks in parallel and review PRs afterward
- You want to try autonomous coding for free before committing to a paid plan
- Your team already works through Slack and GitHub and wants agent hand-offs there
- You care about automated code review and built-in vulnerability fixing
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