Devin is an AI software engineer created by Cognition AI, a company focused on autonomous AI agents. Devin can plan, code, and execute complex software engineering tasks autonomously. Unlike traditional code assistants, Devin can work on entire projects, handle multi-step reasoning, and even deploy applications. Devin represents a new class of AI agents capable of end-to-end software development, from planning to execution to deployment. Devin uses Agent Compute Units (ACUs) as its pricing model - a normalized measure of computing resources including VM time, model inference, and networking bandwidth. Devin has demonstrated significant real-world impact, including helping Nubank achieve 8-12x efficiency gains and 20x cost savings on large-scale code migrations. Cognition AI also owns Windsurf (formerly Codeium Editor), which was acquired in July 2025.

Official Website: www.cognition.ai/

Usage Level	Monthly Requests	Base Cost	Total Cost	Cost/Request
Light User Occasional use, small projects	500	$20.00	$20.00	$0.04
Mid-Level User Regular use, medium projects	2,000	$20.00	$20.00	$0.01
Power User Heavy use, large codebases, frequent refactoring	5,000	$20.00	$20.00	< $0.01

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