Devin vs OpenAI Codex: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
Devin
Devin is the world's first AI software engineer that autonomously codes, debugs, and deploys applications through natural language commands.
OpenAI Codex
OpenAI Codex is an AI-powered coding assistant that writes, tests, and reviews code in your development environment and cloud.
Devin
Devin is the world's first AI software engineer that autonomously codes, debugs, and deploys applications through natural language commands.
OpenAI Codex
OpenAI Codex is an AI-powered coding assistant that writes, tests, and reviews code in your development environment and cloud.
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
OpenAI Codex
Writes code, fixes bugs, and adds tests
Works in terminal, IDE, cloud, and mobile
Automatic pull request reviews on GitHub
Runs multiple tasks at the same time
Provides detailed logs and test results
Supports custom setup through AGENTS.md files
Secure isolated environment for each task
Integrates with VS Code, Cursor, and Windsurf
Background cloud processing
Mobile app support for task management
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.
OpenAI Codex
OpenAI Codex is included as part of your ChatGPT subscription and does not require a separate purchase. It is available across multiple plan levels, each with different usage limits.
ChatGPT Plus costs $20 per month and includes Codex with usage limits that allow about 30 to 150 local messages or 5 to 40 cloud tasks every 5 hours. This plan is best for developers working on a few focused coding sessions each week.
ChatGPT Pro costs $200 per month and provides significantly higher limits, allowing about 300 to 1,500 local messages or 50 to 400 cloud tasks every 5 hours. This plan suits developers who need Codex throughout their full workday across multiple projects.
Business, Education, and Enterprise plans include the same per-seat limits as Plus. However, plans with flexible pricing can purchase additional credits to go beyond included limits. For automatic pull request reviews on all repositories, flexible pricing is required.