Devin vs OpenAI Codex
A detailed side-by-side comparison to help you choose the right AI coding agent for your needs.
Devin
Devin by Cognition Labs is the most-talked-about autonomous AI software engineer of 2024-2026 — an agent that plans, codes, tests, and ships software with minimal human oversight, designed specificall...
- Autonomous full-task software engineering
- Cloud sandboxed dev environment per task
- Plans, writes code, runs tests, debugs, opens PRs
- Devin Review (free standalone code review agent)
- DeepWiki (free codebase exploration tool)
- Most autonomous coding agent shipped to date — handles full tasks end-to-end
- Documented massive efficiency gains on real migrations (Nubank 8-12x, 20x cost savings)
- Free Devin Review + DeepWiki gate-opens the platform for evaluation
- Best results require well-scoped tasks — vague prompts lead to off-track work
- Pricing scales fast for heavy use ($200/mo Max for power users)
OpenAI Codex
OpenAI Codex is a cloud-based software engineering agent that runs in a sandboxed environment, capable of handling multiple coding tasks in parallel while you focus on other work. Unlike inline code c...
- Autonomous cloud sandbox with full dev environment per task
- Parallel task execution—run multiple agents simultaneously
- GitHub integration with automatic PR creation
- Reads and writes files, runs tests, executes shell commands
- Verifiable diffs with complete action logs
- True autonomous agent that works independently in cloud sandbox
- Parallel task execution multiplies developer productivity
- Complete audit trail with verifiable diffs and action logs
- Best experience requires expensive ChatGPT Pro subscription
- Internet-disabled sandbox limits tasks needing external APIs
Verdict: Devin vs OpenAI Codex
Pick Devin if you need autonomous ai software engineer for large-scale migrations and refactors. Pick OpenAI Codex if you need cloud-based autonomous coding agent.
Devin wins on price.
Devin integrates with 7 platforms.
Who should buy this
Devin
- Engineering team facing large-scale migration / refactor work (codebase modernization, framework upgrades)
- VP Eng wanting to scale capacity without proportional headcount growth
- Senior engineer offloading well-scoped tasks (test coverage, dependency upgrades, format consistency)
- Solo devs preferring augmented-IDE workflows (Cursor / Copilot fit better)
- Teams without clear task scoping (Devin needs well-defined work to thrive)
Solo dev: free (Review + DeepWiki) or $20/mo Pro. Power user: $200/mo Max. Team: $80/seat/mo. Enterprise: custom contracts (typically $50-300K+/yr).
Verified 2026-05-06
OpenAI Codex
- Engineer who wants async, autonomous task execution (write feature, fix bug)
- Team already on ChatGPT Pro/Team/Enterprise wanting an integrated coding agent
- Product engineer offloading well-scoped issues to a sandbox agent
- Buyers requiring tasks with internet access (Codex sandbox is offline by default)
- Solo devs unwilling to pay $200/mo for Pro (limited Plus access)
Bundled with ChatGPT Plus ($20) for limited use; ChatGPT Pro ($200) for power use; or API pay-as-you-go on top of ChatGPT subscription.
Verified 2026-05-02
Capabilities at a glance
| Capability | Devin | OpenAI Codex |
|---|---|---|
| Autonomous full-task software engineering | — | |
| Cloud sandboxed dev env per task | — | |
| Plans + codes + tests + debugs + PRs | — | |
| Devin Review (standalone code review) | — | |
| DeepWiki (codebase exploration) | — | |
| SAML/OIDC SSO + dedicated infrastructure | Enterprise | — |
| Public API | — | |
| Autonomous cloud sandbox | — | Per-task isolated env |
| Parallel agents | — | |
| GitHub PR creation | — | |
| Terminal execution | — | Inside sandbox |
| Browser / internet access | — | Disabled by default for security |
| On-prem / self-hosted | — | |
| API access | — | Via OpenAI API |
Security & compliance
| Standard / control | Devin | OpenAI Codex |
|---|---|---|
| SOC 2 | Type II | Type II |
| ISO 27001 | ||
| GDPR | ||
| Self-hosted option | — | |
| SSO / SAML | ||
| RBAC | ||
| Audit logs | ||
| Trains on customer data | No | No |
What users say
Devin
Nubank, Goldman Sachs, Anthropic, Y Combinator-backed startups
OpenAI Codex
Frequently asked questions
Which is cheaper, Devin or OpenAI Codex?+
Devin's Pro plan is $20/month and OpenAI Codex's ChatGPT Pro plan is $200/month. Devin is the cheaper entry point.
What AI models do Devin and OpenAI Codex use?+
Devin runs on Cognition proprietary models, GPT-5 family, Claude Opus + Sonnet. OpenAI Codex runs on GPT-5.3-Codex, GPT-5.1-Codex-Mini, codex-mini-latest.
What is the main difference between Devin and OpenAI Codex?+
Devin is positioned as best autonomous ai software engineer for large-scale migrations and refactors, while OpenAI Codex is positioned as best for cloud-based autonomous coding agent. Pick the one whose strength aligns with your primary use case.
Which has better integrations, Devin or OpenAI Codex?+
Devin integrates with GitHub, GitLab, Slack, Linear and 3 more. OpenAI Codex integrates with GitHub, ChatGPT interface, OpenAI API, CI/CD pipelines.
What are the main weaknesses of Devin and OpenAI Codex?+
Devin's main drawback: best results require well-scoped tasks — vague prompts lead to off-track work. OpenAI Codex's main drawback: best experience requires expensive chatgpt pro subscription.
Are Devin and OpenAI Codex worth it in 2026?+
Both remain competitive coding options in 2026. Devin stands out for most autonomous coding agent shipped to date — handles full tasks end-to-end. OpenAI Codex stands out for true autonomous agent that works independently in cloud sandbox. Choose based on which trade-offs fit your workflow and budget.