Aider vs Devin: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
Aider
Aider is a free command-line tool that lets developers pair program with AI to write and edit code directly in their terminal.
Devin
Devin is the world's first AI software engineer that autonomously codes, debugs, and deploys applications through natural language commands.
Aider
Aider is a free command-line tool that lets developers pair program with AI to write and edit code directly in their terminal.
Devin
Devin is the world's first AI software engineer that autonomously codes, debugs, and deploys applications through natural language commands.
Aider
Edits code files directly in your terminal
Automatic Git commits with clear messages
Works with 100+ programming languages
Connects to any AI model (Claude, GPT-4, DeepSeek)
Maps your entire codebase for better understanding
Voice-to-code commands available
Automatic code testing and linting
Image and webpage input support
Open source and fully free
Terminal and browser interfaces
Devin
Autonomous software development from planning to deployment
Natural language task instructions via Slack or web interface
Full development environment with code editor, terminal, and browser
Real-time collaboration and progress monitoring
Learns and adapts to your codebase over time
Handles bug fixes, feature development, and large migrations
API access for enterprise automation workflows
Multiple AI models for different coding tasks
Aider
Aider itself is completely free to use. It is open source software that you can download and use without any cost. There are no subscription plans or usage limits for the tool itself.
However, to use Aider, you need to connect it to an AI model through an API. These AI services charge based on usage. For example, using Claude or GPT-4 through their APIs costs money based on how many tokens (pieces of text) you process.
The actual cost depends on which AI model you choose. Some options like DeepSeek are very affordable, while others like GPT-4 cost more. You can also use free local AI models on your own computer if you prefer. The tool gives you full control over which AI service to use and how much to spend.
Devin
Devin offers flexible pricing to accommodate different team sizes and usage patterns. The pricing is based on Agent Compute Units (ACUs), which measure the computing resources Devin uses during active work.
Pricing plans include:
Core Plan: Starting at $20 minimum, pay-as-you-go model at $2.25 per ACU. Perfect for individuals and small teams wanting to try Devin without monthly commitments
Teams Plan: Includes 250 ACUs monthly at $2.00 per ACU, then additional ACUs at the standard rate. Ideal for development teams with regular coding needs
Enterprise Plan: Custom pricing with advanced features like fine-tuning, priority support, and dedicated account management
Each ACU represents approximately 15 minutes of active Devin work. The actual consumption depends on task complexity, codebase size, and session runtime. Devin only consumes ACUs when actively working on tasks, not during idle time. All plans include unlimited seats, API access for Teams and Enterprise users, and retain full intellectual property rights for your code.