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 version is Devin 2.2, released on February 24, 2026. It brought roughly 3x faster session startup, full desktop and computer-use testing, automated code review and a redesigned lifecycle UI. Under the hood Devin now runs the Devin Fusion architecture (announced June 2026), which pairs frontier models with cheaper 'sidekick' agents and claims frontier-level quality at about 35% lower cost than using Opus 4.8 alone. The latest addition is Devin Security Swarm (July 2026), which finds, validates and fixes vulnerabilities. There is no Devin 2.3 yet.
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 was restructured after the Windsurf acquisition into self-serve tiers. Free is $0 with a light agent quota, limited models and unlimited inline edits plus Tab completions. Pro is $20/month with larger quotas, access to OpenAI/Claude/Gemini models, free SWE-1.6 and open-source models, and cloud agents. Max is $200/month for power users, and Teams is $80/month base plus $40/month per developer seat with an admin dashboard and centralized billing. Enterprise is custom and still billed in ACUs (Agent Compute Units) with SSO and optional VPC.
The limitations are the usual autonomous-agent ones: it can burn through quota or credits 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. Note that many third-party blogs still quote the older ACU-only pricing (Core $20 + $2.25/ACU, Team $500/mo), which the official billing docs indicate has been replaced for self-serve.
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 without paying up front thanks to the new free tier.
- 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
- New $0 Free tier plus $20 Pro make it far more accessible than the old paid-only model
- Devin Fusion claims frontier-level quality at roughly 35% lower cost than Opus 4.8 alone
- Devin 2.2 adds desktop/computer-use testing and automated code review; Security Swarm handles vulnerabilities
- 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 the 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
Leave a Review
Reviews are published after moderation. We don't share your email.