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I'm not sure copilot is using codex anymore[0]. They've also been talking about a shift towards GPT-4 with "Copilot X" a few times now[1][2]. [0] https://githu

• up6w6 3y ago
  True. The results from codex are actually from code-cushman-001 (Chen et al. 2021), which is an older model that Copilot was based on.
• zarzavat 3y ago
  Copilot X is just their name for their project to bring AI to more areas of VSCode. I don’t believe they can use GPT-4 for completions because it’s a chat-optimized model. It seems that they are using something else, that blog post seems to imply it’s a custom-trained model.
  • cosmojg 3y ago
    I use GPT-4 for code completion all the time! There are many Neovim extensions[1][2][3] (and I'm sure there are many VSCode extensions) which call the GPT-4 API directly for code completion. I'm pretty sure the only reason that Microsoft might avoid using GPT-4 for Copilot is cost. [1] https://github.com/cosmojg/nvim-magic https://github.com/cosmojg/nvim-magic [2] https://github.com/dpayne/CodeGPT.nvim https://github.com/dpayne/CodeGPT.nvim [3] https://github.com/aduros/ai.vim https://github.com/aduros/ai.vim