AI tool comparison
Convex vs Devin
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
Developer Tools
Convex
Reactive backend-as-a-service
100%
Panel ship
—
Community
Free
Entry
Convex is a reactive backend with real-time sync, server functions, file storage, and scheduling. TypeScript-first with automatic reactivity — data changes flow to clients instantly.
Developer Tools
Devin
Autonomous AI software engineer by Cognition
33%
Panel ship
—
Community
Paid
Entry
Devin is an autonomous AI agent that can plan, code, debug, and deploy entire features independently. It operates in its own sandboxed environment with terminal, editor, and browser. Targets long-running, complex engineering tasks.
Reviewer scorecard
“Real-time reactivity without WebSocket boilerplate. Server functions co-located with schema definition is elegant.”
“At $500/mo it needs to replace at least 10 hours of developer time per month. In my testing, I spent more time reviewing and fixing its output than I saved. Not there yet.”
“The DX is genuinely excellent. If your app needs real-time, Convex eliminates an enormous amount of complexity.”
“The marketing writes checks the product can't cash. 'Autonomous software engineer' implies reliability that doesn't exist. It's a talented intern that needs constant supervision.”
“Reactive backends that push data to clients will become the default. Convex is building that future now.”
“Devin is early but directionally correct. The autonomous agent approach will win eventually. Cognition has the best shot at getting there first. Invest in the future, not the present.”
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