option to change LLM models

[zihaolam]

• on github copilot docs, there are so many models available
• on IDES like vscode, cursor, etc, its one of the basic features to change LLM models
• in neovim, there is no transparency in what models we're using and no option to change the models
• models are seemingly giving bad autocomplete predictions, and i'd just love to test out the later models with autocompletion

plz copilot, give vim users some love

[tpope]

Most of the models you have been reading about in the documentation are for chat, which Copilot.vim does not currently support. For completions, there is generally only one production model available, plus occasionally a preview model. As of today, May 3rd, there's a gpt-4o-copilot-2025-04-03 preview model available, which you can opt into with the following in your vimrc:

let g:copilot_settings = #{selectedCompletionModel: 'gpt-4o-copilot-2025-04-03'}

Or init.lua:

vim.g.copilot_settings = { selectedCompletionModel = 'gpt-4o-copilot-2025-04-03' }

It's on my todo list to add a mechanism for listing available completion models in Copilot.vim, but since it's just the occasional preview model, it's not a top priority. You can steal them from another supported editor if you're desperate. This is from "Change Completions Model" in the VS Code command palette, for example:

[GitMurf]

As of today, May 3rd, there's a gpt-4o-copilot-2025-04-03 preview model available

@tpope is this still valid? I am getting the following from LSP logs:

[default] User selected model gpt-4o-copilot-2025-04-03 is not in the list of generic models: gpt-4o-copilot, falling back to default model.

[jinzhongjia]

Currently, it is enough to use the default model. Recently, github switched to gpt4.1

[GitMurf]

Currently, it is enough to use the default model. Recently, github switched to gpt4.1

No, that is for copilot chat. Not for completions.

[xdannyrobertsx]

commenting to stay informed!

[yermulnik]

commenting to stay informed!

It's on the right pane: