Devin

Devin is Cognition's autonomous AI software engineer that plans features, fixes bugs and tests its own work before opening a pull request.

Devin is an AI coding agent from Cognition that takes on engineering tasks from planning to a merge-ready pull request. It runs in the cloud or on a developer's machine, spins up Windows, Mac and Linux virtual machines as needed, tests what it built in its own browser, and records itself clicking through the result. Teams run several Devin sessions in parallel for jobs such as feature work, bug fixes, failed CI checks, security scans and weekly dependency upgrades. Its Fusion approach mixes frontier models from several providers, which Cognition says cuts cost by up to 60%. Developers assign work from Slack, Microsoft Teams or the web app, and Devin follows a codebase's existing patterns when it writes code.

Devin at a glance

Best for: Software engineer, Founder
Runs on: Web, CLI, Slack, Microsoft Teams
Pricing: Free; Pro $20/month; Max $200/month; Teams from $80/month; Enterprise custom
Released: December 2024
Category: AI agent tool
Website: devin.ai

Key features

Plans and builds features from a written request
Own Windows, Mac and Linux VMs for testing
Browser testing with screen recordings of results
Parallel cloud sessions for many tasks at once
Fixes for bugs, failing CI and security issues
Fusion model mixing for lower cost
Task assignment from Slack and Microsoft Teams

Use it for

Hand off a backlog of small bugs and get pull requests back
Run weekly dependency upgrades automatically
Add a feature such as SSO following existing patterns

Companions

Tools that articles about Devin recommend using with it, each with its job.

Cursor — Cursor for hands-on work, Devin for delegated tasks.
Slack — Tag Devin in a thread to start a session.
GitHub — Devin's output is a PR you review in GitHub.
Linear — Assign issues and get linked PRs back.
Jira — Jira tickets can be assigned to Devin too.
Snyk — Snyk alerts trigger Devin Cloud runs.

Alternatives to Devin

Alook — Connects existing local coding agents to team communication channels.
Windsurf — Manage fleets of local and cloud agents from one command center.
Composio — Equips AI agents with tools, managed user auth, and sandboxes across 1,500+ apps
OmniAgent — It evolves skills in real-time and dynamically hardens security during task execution.
Nexent — Auto-generate production-grade AI agents from natural language prompts without complex setup.
Polylane — It autonomously investigates production errors and submits ready-to-merge PR fixes.
Beeuni — Agents retain context and improve skills over time through a controlled review process.
Dex — One interview, then a shortlist and an intro to the hiring manager
BrowserOS — Runs entirely locally and lets AI agents use real user logins to complete tasks.
Agentloop — Provides a clean agent loop with provider-agnostic LLM access, hooks, and safety budgets.
CrewAI — Open-source agent framework with enterprise governance on top
Comma — It operates 24/7 on a cloud computer to finish tasks independently.

All Devin alternatives