Overview
Devin is an autonomous software engineer AI agent by Cognition AI. Originally launched with a $500/month minimum, Devin 2.0 slashed the entry price to $20/month in 2025, bringing it within reach of individual developers. It executes end-to-end software tasks — opening PRs, running tests, and modernizing legacy code — the way a human engineer would.
Key Features
1. Cloud IDE and Parallel Agents
Runs inside an interactive cloud IDE where you can spin up multiple Devins to tackle different tasks concurrently.
2. Legacy Code Modernization
Ingests massive legacy codebases (COBOL, Fortran, Objective-C) and proposes or implements refactors into modern languages.
3. Automated Pull Requests and Review Response
Opens detailed PRs and responds to review comments autonomously, iterating until merge-ready.
4. Visual Input Support
Consumes Figma designs, UI mockup images, and screen recordings to understand visual bugs and UI requirements.
5. Devin 2.0 Performance Gains
Cognition claims the latest version completes 83% more junior-level development tasks per Agent Compute Unit (ACU) versus its predecessor in internal benchmarks.
Plans & Pricing
| Plan | Monthly | Perks |
|---|---|---|
| Core | From $20 | Pay-as-you-go, ACUs at $2.25 each |
| Team | $500 | 250 ACUs included, ACUs at $2.00 each |
| Enterprise | Custom | VPC deployment, SAML SSO |
An ACU (Agent Compute Unit) is a normalized measure of compute resources — roughly 15 minutes of Devin actively working.
Typical Use Cases
- Automated bug fixes and PR creation
- Legacy code modernization
- Test generation and coverage improvement
- Converting specs and mockups into working code
Strengths
- Individual-friendly entry pricing from $20
- Parallel agents for multitasking
- Handles large legacy codebases
- Accepts Figma and video as input
Weaknesses
- ACU consumption is hard to forecast
- Complex tasks still require human review
- Team plan and above remain expensive
Official Links
- Website: https://devin.ai
- Pricing: https://devin.ai/pricing