OpenAI Codex is described as 'One agent for everywhere you code. Powered by OpenAI’s frontier coding models and included in ChatGPT Plus, Pro, Business, Enterprise, and Edu' and is a ai coding assistant in the development category. There are more than 50 alternatives to OpenAI Codex for a variety of platforms, including Mac, Windows, Linux, Visual Studio Code and Web-based apps. The best OpenAI Codex alternative is Google Antigravity, which is free. Other great apps like OpenAI Codex are Void, Gemini CLI, Windsurf Editor and opencode.
OpenAI Codex alternatives are mainly AI Coding Assistants, but if you're looking for
Code Editors or AI Chatbots you can filter on that. You can also filter by region, for example
EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to OpenAI Codex.