Devin vs OpenAI Codex: Coding Agents Comparison
Compare Devin and OpenAI Codex side by side. Both are tools in the Coding Agents category.
Updated March 9, 2026
The short answer
Choose Devin if dramatically reduced pricing makes AI coding accessible at USD 20/month.
Choose OpenAI Codex if runs tasks autonomously in parallel in sandboxed environments.
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Quick Comparison
| Category | Coding Agents | Coding Agents |
| Pricing | Enterprise | — |
| Best For | Engineering teams who want a fully autonomous AI software engineer | — |
| Website | devin.ai | openai.com |
| Key Features |
| — |
| Use Cases |
| — |
Pros & Cons: Devin vs OpenAI Codex
- +Dramatically reduced pricing makes AI coding accessible at USD 20/month
- +Strong performance on routine tasks—bug fixes, tests, and glue code
- +Autonomous operation through Slack reduces context switching
- +Proven ROI with companies like Nubank reporting 20x cost savings
- −Completes only 15 percent of complex tasks without human help
- −Gets stuck in technical dead-ends requiring intervention
- −Cannot handle integration conflicts or unclear decision points
- −Tasks take much longer than expected—days instead of hours for straightforward work
- +Runs tasks autonomously in parallel in sandboxed environments
- +Strong multi-file editing and codebase-level reasoning
- +Vision capabilities for interpreting screenshots and UI mocks
- +Available via ChatGPT subscription and API
- +GPT-5.3-Codex is the most capable agentic coding model
- −Still fails 43% of professional-level tasks
- −Cannot access the internet for dependency resolution
- −Requires 3-5 iterations on average for error-free output
- −Desktop app limited to macOS with usage caps
Pricing: Devin vs OpenAI Codex
- · Pay-as-you-go model
- · USD 2.25 per ACU
- · Light workflows
- · Individual developers
- · 250 ACUs included
- · Predictable monthly cost
- · Team collaboration
- · Consistent workflows
- · SaaS or VPC deployment
- · Complete data isolation
- · Advanced security
- · Compliance features
- · 30-150 Codex tasks per 5 hours
- · Cloud sandbox execution
- · PR creation and code review
- · 300-1,500 tasks per 5 hours
- · Higher rate limits
- · Priority access
- · 75% prompt caching discount
- · Responses API access
- · Programmatic integration
- · SCIM, EKM, user analytics
- · Custom data retention
- · No training on business data
When to Choose Devin vs OpenAI Codex
- End-to-end feature development
- Bug fixing with full autonomy
- Repository-wide migrations
How to Choose a Coding Agents Tool
Key criteria to evaluate when comparing Coding Agents solutions:
About Devin
Devin is an AI software engineer developed by Cognition AI that acts as an autonomous coding agent capable of handling end-to-end software development tasks. Launched in early 2024 and initially priced at USD 500/month for early access, Devin 2.0 dramatically reduced pricing to USD 20/month in April 2025, making it accessible to individual developers and small teams. Devin operates independently through Slack, handling tasks from bug fixes to complex feature implementation. The platform achieved 3x better performance than previous systems on the SWE-bench coding standard and has been used by companies like Nubank, which reported saving 20x the cost on migration tasks. Devin offers three pricing tiers: Core at USD 20/month with pay-as-you-go ACUs at USD 2.25 each, Team at USD 500/month with 250 included ACUs, and custom Enterprise pricing. While Devin excels at routine coding work and tedious tasks, developer feedback reveals it struggles with complex architectural decisions, integration conflicts, and can get stuck in technical dead-ends, completing only 15 percent of complex tasks without human intervention.
About OpenAI Codex
OpenAI Codex is a cloud-based autonomous coding agent that runs in a sandboxed environment. Built on GPT-5.3-Codex, it can read codebases, write and edit code across multiple files, run tests, and submit pull requests from natural language task descriptions. Codex operates asynchronously, handling tasks in parallel while developers focus on other work.
The product is available through ChatGPT subscriptions (Plus at $20/month, Pro at $200/month) and via the API using codex-mini-latest at $1.50/1M input tokens and $6.00/1M output tokens. Codex supports both cloud sandbox and local terminal execution modes.
OpenAI was founded in 2015 and is headquartered in San Francisco. The company is valued at approximately $500-730B and is preparing for an IPO that could value it at up to $1 trillion.
What is Coding Agents?
AI-powered developer tools that can write, review, debug, and refactor code—ranging from IDE copilots to fully autonomous software engineering agents.
Browse all Coding Agentstools →Frequently Asked Questions
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