What changed
Free and Student users can no longer pick a model by hand; Copilot’s Auto selection chooses one per task from several model families, within each plan’s limits. GitHub also dropped the Preview label from Microsoft-released models, saying auto routing makes it unnecessary. The announcement didn’t list which models are included or any usage limits.
Who it affects
Copilot Free and Student users, and educators who relied on specific models.
What to do
If your workflow depends on a particular model, you’ll need a paid plan.
Source: https://github.blog/changelog/2026-06-24-changes-to-model-selection-for-free-and-student-plans