Devin
The always-on junior engineerAutonomous AI software engineer that writes, debugs, tests, and deploys code end-to-end using a sandboxed browser, terminal, and IDE.
- Maker
- Cognition
- Founded
- 2023
- Pricing
- Free tier · from $20/mo
- Last checked
- October 2026
Verdict
Autonomous AI software engineer that writes, debugs, tests, and deploys code end-to-end using a sandboxed browser, terminal, and IDE.
Score breakdown
vs Claude Code, the category leaderEngineering teams offloading high volumes of junior-level coding tasks — test writing, vulnerability remediation, repo migrations, and defined ticket work
Key features
- Sandboxed execution environment with terminal, browser, and code editor access
- Autonomous multi-step task planning, execution, and self-correction
- GitHub integration for PR creation, code review assistance, and repo onboarding
- Jira, Linear, and Slack integrations for ticket-driven workflows
- Supports vulnerability scanning and automated remediation workflows
- Devin Desktop (the former Windsurf IDE) and Devin Cloud agents sold under one set of plans on devin.ai/pricing
- Enterprise VPC deployment with SAML/OIDC SSO and audit controls
Strengths
- +Full autonomous development environment — terminal, browser, and IDE accessible in one agent without switching tools
- +Excels at well-defined junior-level tasks: vulnerability fixes, test writing, migrations, and small ticket completion
- +67% PR merge rate as of 2025, up from 34% — meaningful real-world output quality improvement
- +Enterprise-ready with VPC deployment, SAML/OIDC SSO, and centralized billing controls
- +4x faster problem solving and 83% more tasks per ACU compared to Devin 1.x after the 2.0 overhaul
Weaknesses
- −Real-world complex-task completion rate remains around 15% without supervision; the 'last 30%' problem persists
- −Usage-quota and compute-based billing make monthly costs harder to predict for teams with variable workloads
- −Gets lost in codebases over 100K lines — prone to modifying wrong files or duplicating existing utilities
- −Requires well-written, detailed task descriptions; struggles with ambiguous or open-ended requirements
Overview
Overview
Devin is an autonomous AI software engineer built by Cognition, a San Francisco startup founded in November 2023 by Scott Wu, Steven Hao, and Walden Yan. Unveiled in March 2024, it became notable as one of the first agents to operate a full development environment — terminal, browser, and IDE — to complete software tasks end-to-end rather than just autocomplete snippets.
Devin 2.0 launched in April 2025, dropping the entry price from $500 to $20 per month and delivering 83% more task completions per compute unit than its predecessor. Billing is based on Agent Compute Units (ACUs), where one ACU equals roughly 15 minutes of active work. By mid-2026, Cognition had raised a Series D at a reported $26 billion valuation, and Goldman Sachs had piloted Devin alongside its 12,000 human developers.
In practice, Devin performs well on junior-level, clearly scoped tasks: fixing vulnerabilities flagged by static analysis, writing test suites, migrating legacy codebases, and churning through backlog tickets. Its 2025 PR merge rate of 67% (up from 34% in 2024) signals genuine production utility. However, independent testing puts complex task completion without supervision at around 15%, and the agent reliably struggles with large codebases, architectural judgment, and ambiguous requirements — areas where senior engineering judgment still dominates.
Key Benefits
- Full autonomous loop: Devin researches, writes code, runs tests, fixes failures, and opens pull requests without switching between tools.
- Maintenance acceleration: Organizations have reported 20x efficiency gains on vulnerability remediation compared to human developers handling the same workload.
- Improving reliability: Consistent year-over-year gains — 4x faster problem-solving and a doubling in resource efficiency since 2024.
- Enterprise governance: VPC deployment, SSO, teamspace isolation, and centralized billing make it deployable inside strict security perimeters.
Use Cases
- Vulnerability remediation at scale — Devin can process static analysis output from tools like SonarQube and Veracode, fix flagged issues, and submit PRs; one enterprise clocked Devin at 1.5 minutes per fix versus 30 minutes for human developers.
- Test suite generation — Given a module and its specs, Devin writes unit and integration tests systematically, freeing engineers for higher-value work.
- Legacy codebase migration — Devin handles well-defined modernization tasks such as framework upgrades, dependency migrations, and boilerplate refactors across repositories.
- Backlog ticket completion — Teams connect Devin to Jira or Linear and route clearly scoped tickets directly to it, treating it as a non-blocking async engineer on the team.
Pricing
Checked October 2026 · USD- Light usage quota (Devin Desktop only: tab completions and inline edits)
- Limited model access
- Single user
- Daily and weekly usage quota with models from OpenAI, Anthropic, Google and others
- Devin Cloud agents included
- SWE-2 free through October 16, 2026
- Everything in Pro with a much larger weekly quota and no daily cap
- Aimed at power users
- Supports up to 200 users
- Collaboration, centralized billing and admin analytics
- VPC deployment in your own infrastructure
- SAML and OIDC SSO
- Dedicated account team and custom terms