| title |
Devin - Long-running session agent |
| tagline |
End-to-end autonomous SDE in a cloud VM with browser, shell, and editor; one chat-style session runs hours-to-days unattended. |
| attribution |
Cognition Labs |
| tier |
tool |
| autonomous |
true |
| canonical_url |
https://devin.ai/ |
| requires |
Devin subscription (≥ $500 / mo) |
| setup_command |
# In the Devin web UI or Slack integration:
# State the goal once, in a single prompt:
"Build feature X end-to-end, branch, code, tests, PR.
Ping me on red CI or blocker."
# Walk away. Review the resulting PR.
|
| when_to_use |
Long async work where you'd otherwise context-switch repeatedly, predictable bug fixes, dependency upgrades, well-specified features. |
| when_not_to_use |
Tasks that require live debugging or per-step human judgment, Devin runs opaque mid-session. |
| tags |
devin |
cognition |
async |
session-agent |
|
| use_cases |
|
| sources |
| title |
author |
url |
year |
Devin (Cognition Labs) |
Cognition Labs |
|
2024 |
|
|
| related |
| antiPatterns |
practices |
tools |
workflows |
cookie-clicker-mode-passive-supervision |
yolo-mode-in-production |
|
sandbox-for-autonomous-runs |
human-in-loop-checkpoints |
|
|
cursor-background-agents |
codex-cloud |
|
|
Cognition shipped Devin in March 2024 and it drew equal parts awe and debunking videos. The product that survived that cycle is narrower and more useful than the launch demo: dependency upgrades, predictable bug fixes, well-specified features that nobody on the team wants to context-switch into.
The catch is opacity. Mid-session, Devin is a black box that occasionally asks questions in Slack. Everything you would normally steer interactively has to live in the brief: acceptance criteria, test commands, what "done" means. Cognition's own onboarding advice points the same direction: treat it like a new junior engineer and hand it small, well-specified tasks, with the PR review carrying the full weight of the review gate.
Sessions are metered in agent compute units (ACUs), so an underspecified task that wanders for hours costs real money on top of the review time.