Possible to use GPT-5 in Apple Xcode Intelligence ?

[Michael-Z-Freeman]

Hi everyone,

I have been accepted for GitHub Education. I did try to use GitHub Copilot with Apple Xcode, but was not happy with the results. Would it be possible to use my GitHub Education account to access GPT-5 model provided by GitHub at the API level so I can add it to Coding Intelligence in Xcode ?

Any help appreciated !

[Genious07]

Hi! Congrats on getting into GitHub Education—that's awesome for students like you.
Quick note: GPT-5 isn't available yet (as of now, the latest is GPT-4o from OpenAI). GitHub Education doesn't directly give API access to OpenAI's GPT models, but you can use GitHub Models for free API access to GPT-4o and others (like Llama 3.1, Mistral). It's OpenAI-compatible and works with your GitHub account—no extra cost.
To integrate into Xcode for code intelligence:

Install the free "Copilot for Xcode" extension from GitHub (search for intitni/CopilotForXcode). It supports custom LLM setups.
Generate a GitHub Personal Access Token (classic, with read:user scope) via your GitHub settings.
In the extension's settings, configure an "OpenAI" model: Use the GitHub Models endpoint, your token as the API key, and select gpt-4o as the model.
Enable it for suggestions/chat in Xcode—should give you better code completion than standard Copilot.

If that doesn't click or setup feels tricky, switch to Codeium as a free alternative: It's unlimited for individuals, integrates seamlessly via the same extension (just sign in with Codeium account), and many devs prefer it for Xcode over Copilot.

[Michael-Z-Freeman]

Thanks ! I’ll give that a go.

[Michael-Z-Freeman]

I get "Unsupported value: 'temperature' does not support 0.7 with this model. Only the default (1) value is supported.".

I tried adding custom body or header with temperature of 1. Still get the same error.

I checked in my account and the docs and I have access to GPT-5.

Where do I set the temperature ?

[Raihanhn]

Right now, Apple’s Xcode doesn’t have built-in support for GPT-5 (or any OpenAI models). Xcode’s Xcode Intelligence / Swift Assist is Apple’s own AI system.

If you want GPT-5 inside Xcode, you’d need to use it through the OpenAI API (or a third-party plugin/extension). There isn’t an official integration from Apple at this time.

[Michael-Z-Freeman]

Thanks. I should’ve said that I’m using Xcode beta, which does have access to GPT 5.