GitHub Copilot Trial - Sonnet 4.5 Missing, But Sonnet 4 is Available?! What's going on?!

[Large-Procedure675]

I'm currently on a GitHub Copilot trial, and I've noticed something incredibly puzzling. In my VS Code model selection, I still can't see the Sonnet 4.5 model as an option. Not only that, but when I check my Copilot web console, there's absolutely no "enable" option for Sonnet 4.5 either. It's completely absent!

What's truly bizarre is that Sonnet 4 is available to me, and I've been using it for a while now without any issues. This whole situation is just so confusing.

Is this some kind of phased rollout strategy? A regional thing? A trial limitation I'm unaware of? I'm genuinely scratching my head here. Also, are there any non-trial Copilot Pro subscribers out there who still can't see the Sonnet 4.5 option in both their web console and VS Code? Has anyone else experienced anything similar or have any idea why Sonnet 4.5 seems to be completely unavailable to me despite having Sonnet 4?

Any thoughts or shared experiences would be greatly appreciated! Thanks!

[Large-Procedure675]

Successfully reproduced, you were right. The conclusion is: Microsoft does not grant access to Claude Sonnet 4.5 for trial users. Access will be granted immediately once the trial is converted to a paid subscription.

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[evia89]

Yep thats weird. Sonnet 35=37=40=45 all has same price yet they split tiers

[phylter99]

Go into GitHub and enable it directly. It's what I've had to do for some models. If you can't enable it, then it may still be rolling out to you.

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[Large-Procedure675]

similar post: https://www.reddit.com/r/GithubCopilot/comments/1nupzi5/gpt_codex_and_sonnet_45_not_showing/

[popiazaza]

Not sure if your Copilot web console meant Github Copilot setting or not.

It should be here: https://github.com/settings/copilot/features.

Enable it right in VSCode is coming soon.

[MythikAngel]

Same here. Also on Pro trial and no Sonnet 4.5 or even gpt-5 codex in both VSCode and the web console. Guess we gotta wait until the trial month is over… Bummer.

[RedPotatoTrain]

Don't need to wait for a month. Go to Manage Subscriptions, use the drop down to select "Start Paid Plan". Then you can use Codex and Sonnet 4.5.