OpenAI Codex vs Refact.ai
OpenAI Codex
openai.comRefact.ai
refact.aiSide by side
| Figure | OpenAI Codex | Refact.ai |
|---|---|---|
| Price from | — | $10/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 6 | 3 |
| Spec score · AI Coding Assistants | 8.6 (#31) | 9.3 (#5) |
| Spec score · AI Code Generators | 8.1 (#41) | 8.8 (#16) |
| Coding agent | Yes | Yes |
| Chat assistance | Yes | Yes |
| Codebase indexing | Yes | Yes |
| Free plan | No | Yes |
| Security | OpenAI says infrastructure for its products uses encryption in transit and at rest, change management, and strict access controls. | The privacy policy says transmitted data is encrypted in transit and at rest, access is controlled, and role-based access controls and multi-factor authentication are used. |
| Support | OpenAI links users to its Help Center and service status page for support resources. | The enterprise offering includes dedicated assistance from engineers, priority support, and onboarding. |
| Supported IDEs | Visual Studio Code; Cursor; Windsurf; Visual Studio Code Insiders; Xcode; JetBrains IDEs | VS Code,JetBrains,Visual Studio,Neovim,Sublime Text |
| Terminal access | Yes | Yes |
Plans
OpenAI Codex
- Business StandardPrice not published
- Business PremiumPrice not published
- EnterprisePrice not published
- Business$20 a month
- Plus$20 a month
- Pro$100 a month
In their own words
OpenAI Codex
OpenAI Codex has no write-up on Specifiction yet; its figures are above.
Refact.ai
Refact.ai is a free, open-source autonomous AI coding agent for software development. It provides real-time code completion, in-IDE chat and agent workflows that can plan, execute and deploy coding tasks while letting users preview and control the process. Chat supports natural-language questions, editing, debugging and code generation. Repository analysis, retrieval-augmented generation and codebase indexing provide project-aware context, and terminal access is available. The maker says it supports more than 25 programming languages. Plugins are listed for VS Code and JetBrains, with Visual Studio, Neovim and Sublime Text marked beta. Platforms include Windows, macOS, Linux, API, extension and self-hosted deployment. Local use can connect to configured providers or runtimes such as OpenAI, Anthropic, Gemini, Ollama, LM Studio and vLLM. The Free plan costs nothing for personal and hobby projects. Pro costs $10 a month for professional use. Hosted accounts and cloud features are being retired.