AI coding glossary
Devin
Also known as: devin ai, cognition devin
In one sentence
Cognition Labs' autonomous AI software engineer, a browser-based agent that operates a sandboxed VM with shell, browser, and IDE to complete multi-day engineering tasks end to end.
Full definition
Devin is Cognition's autonomous AI software engineer, launched in 2024 and matured through 2025-2026. It runs in a sandboxed cloud VM with shell + browser + IDE access and is designed to complete entire issues end-to-end (read the ticket, plan, code, test, open PR). Distinct from in-editor assistants like Cursor / Copilot, Devin is task-shaped (assigned an issue, returns a PR), not session-shaped (chat in your IDE). In 2026 it's bundled with Windsurf Max ($200/mo) as a 'Devin Terminal CLI' offering on top of the desktop agent. Use cases: ticket queues for routine bug-fixes, dependency updates, and well-scoped features where the spec is clear.