Alternatives

Products that do what OpenAI Codex for Free with GitHub Models does

1. 1
   OpenAI Universe▲329

   Platform for measuring and training AI agents

   2016

2. 2
   OpenAI Gym▲147

   Open source interface to reinforcement learning tasks

   2016

3. 3AF
   API for free deep learning models▲26

   2016 · openapi.keplr.io

4. 4EN
   Exafunction NLP – Run models like GPT-J for 6x cheaper than OpenAI▲45

   2021 · exafunction.com

5. 5CO
   Cortex – Open-source alternative to SageMaker for model serving▲65

   2020 · github.com

6. 6AO
   An Open Source Version of OpenAI Assistants API▲5

   2023 · twitter.com

7. 7AG
   A GUI for OpenAI's GPT-2 774M model▲11

   2019 · storyai.botsociety.io

8. 8GF
   GitHub for ML datasets▲15

   2018 · dataturks.com

9. 9OS
   Open sourcing nearby.lk data models library▲15

   2016 · vpj.github.io

10. 10CA
    Cloudbank-An OpenAI universe Alternative▲9

    2018 · github.com

11. 11AF
    Alternative framework for OpenAI document agent for all models▲6

    2024 · app.intellinode.ai

12. 12ET
    Easy-to-use, AI-powered GitHub Actions▲6

    2024 · github.com

13. 13CC
    CodeSpin - Code generation framework and tools using OpenAI APIs▲7

    2023 · github.com

14. 14OS
    Open source AI data analyst locally using CLI▲7

    2024 · github.com

15. 15SN
    Surf.new – An open-source alternative to OpenAI Operator▲9

    2025 · surf.new

16. 16AI
    Arturo.io – Automatic book builds on GitHub▲13

    2014 · arturo.io

17. 17OS
    Open-Source Infrastructure for AI Code Interpreters▲6

    2024 · e2b.dev

18. 18SN
    Surf.new – An open-source alternative to OpenAI Operator▲7

    2025 · github.com

19. 19OS
    Open-Source Desktop AI Webscraper▲9

    2023 · github.com

20. 20AF
    A free and open source online database modeling editor▲9

    2025 · editor.besser-pearl.org

21. 21IO
    I open-sourced the library I use to track ML experiments with GitHub▲5

    2024 · docs.cubyc.com

22. 22SY
    Score your GitHub repo for AI coding agents▲7

    Mar 2026 · twill.ai

23. 23BO
    Beating OpenAI's structured outputs on cost, accuracy and speed▲8

    2024 · boundaryml.com

24. 24OS
    Open-Source Machine Learning Suite for the Browser▲8

    2017 · github.com

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