Devin vs Manus
Devin, from Cognition Labs, is marketed as an AI software engineer: you assign it a coding task — a bug fix, a small feature, a dependency upgrade — and it works in its own sandboxed environment with its own shell, code editor, and browser, planning and executing the steps needed, then opening a pull request for a human to review. It integrates with GitHub, Slack, and Linear so it can fit into an existing team's workflow rather than requiring a separate tool. There's no free tier; usage is billed via "ACUs" (Agent Compute Units) starting around $20/mo for a limited allowance, and complex or long-running tasks can consume credits quickly. Devin works best on well-scoped, clearly defined tasks — ambiguous or very large tasks still benefit from human breakdown first, and all output should go through normal code review before merging.
Manus is a general-purpose autonomous agent: give it a goal in plain language, and it plans a sequence of steps — searching the web, writing and executing code, creating files — inside its own cloud sandbox, with a live view of its progress and reasoning as it works. Unlike narrow coding agents, Manus is aimed at open-ended deliverables: research reports with citations, data analysis with spreadsheets and charts, simple websites, or slide decks, produced as downloadable files at the end of a run. The free tier provides a limited number of tasks/credits per month, enough to evaluate the agent on a real task; paid plans starting around $39/mo provide significantly more credits for regular use. Complex, multi-stage tasks can consume credits quickly, and while Manus is impressively autonomous, results on ambiguous or large-scope requests still benefit from human review and follow-up refinement.
| Devin | Manus | |
|---|---|---|
| Category | AI Agents | AI Agents |
| Price | From $20/mo | Free (limited) / from $39mo |
- + Handles multi-step engineering tasks with less hand-holding
- + Works in an isolated sandbox with its own tools
- + Integrates with GitHub, Slack, and Linear
- + Opens PRs for normal human review
- – No free tier; usage-based ACU pricing can get expensive
- – Best suited to well-scoped tasks
- – Output still requires careful human review
- + Handles broad, open-ended tasks autonomously
- + Works in its own sandboxed cloud environment with live progress
- + Produces ready-to-use deliverables (files, slides, mini-apps)
- + Free tier available to try
- – Credit-based usage can be consumed quickly on complex tasks
- – Ambiguous tasks still need human review
- – Can be slower than specialized tools for simple jobs