Codex Alternatives

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 Codex for a variety of platforms, including Mac, Windows, Linux, Web-based and Visual Studio Code apps. The best Codex alternative is Google Antigravity, which is free. Other great apps like Codex are opencode, Claude Code, Void and Windsurf Editor.

filter to find the best alternatives

Codex alternatives are mainly AI Coding Assistants, but if you're looking for Code Editors or AI Chatbots you can filter on that. Other popular filters include Open Source. 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 Codex.
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Alternatives list

  1. guIDE is the first truly native LLM IDE — unlimited completions, complete privacy, no subscriptions. Built like VS Code, designed for your local LLM AI models directly on your machine. Offline-first and privacy-first with native tools built for speed.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
     
  2. Kimi Code icon
     Like

    A coding-focused perk of the Kimi membership, engineered to drop into any dev workflow, answer faster and more reliably, and get programming tasks done in record time.

    51 Kimi Code alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Windows
    • Mac
    • Linux
    • Visual Studio Code
    • Cursor
     
  3. OpenBlock icon
     Like

    OB-1 is a terminal-based coding agent — like Claude Code, but with multi-model access and self-optimizing workflows. You bring your own API keys (or use ours), pick the best model for each task, and let OB-1 handle the rest.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Windows
    • Linux
    • Mac
     
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