Copilot's gpt-5 models give model _not_supported error.

[pseudofractal]

I was trying to setup the gpt-5-codex model for copilot but the following error message shows up. I tested gpt-5 and gpt-5-mini but got the same result.

[chat::_submit_http] Error: {
  body = '{"error":{"message":"The requested model is not supported.","code":"model_not_supported","param":"model","type":"invalid_request_error"}}',
  status = 400
}

Now I am unsure what the issue is because #2194's comment suggests to me that this should work now?

My config (in case it matters):

chat = {
        adapter = {
          name = "copilot",
          model = "gpt-5-codex",
        },
        tools = {
          opts = {
            auto_submit_errors = true,
            auto_submit_success = true,
          },
        },
      }
      ```

[olimorris]

Have you enabled it in GitHub?

[pseudofractal]

Ahh that was indeed the case. Thanks.