Where can I enable and disable model as an individual?

[dlukt]

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I used to be able to enable e.g. opus 4.5 or disable e.g. codex-5.1.
Now I can't find that anymore.
People are reporting that gpt-5.3-codex is live, but it's not in the list.
So idk what's happening.
I'm thinking maybe it's not enabled, or they're using openai codex in vsc

[IsuruParindya]

From what I can tell, GitHub has been shifting how Copilot models are exposed in the settings. The manual toggles for specific models (like Opus or Codex versions) don’t seem to be available anymore in the UI.

If people are reporting access to something like gpt-5.3-codex, it’s likely either:

A staged rollout (not available to all accounts yet),

An enterprise-level feature flag, or

Accessed through OpenAI Codex integration in VS Code rather than standard Copilot settings.

It doesn’t look like individual model selection is user-controlled at the moment. GitHub may be auto-assigning models based on plan tier or internal routing.

Would be helpful if GitHub clarified whether model selection is deprecated or just moved.

[dlukt]

I agree. I have a copilot+ subscription in Europe. Reporters seem to be American.
If you're a subscriber, do you see it on github in the agents list on the / route?

[IsuruParindya]

I’m not in Europe, but yeah, the agents list on / is where you’ll see which models are actually enabled for your account. If gpt-5.3-codex isn’t there, it’s likely not rolled out to you yet, even if reporters in the US see it.

[abhi478jeetur-rgb]

I’ve noticed the same thing and it seems this is an intentional change in how Copilot manages models for individual users. For many accounts, the explicit per‑model switches (like manually choosing opus 4.5 or disabling codex‑5.1) have been removed from the UI.
​

Instead, Copilot now appears to auto‑select models based on feature and context (code completion, chat, agents, etc.), so the user-facing controls are more about turning features on/off rather than picking specific models. This also matches what others reported about not seeing options like gpt-5.3-code directly anymore.
​

Right now, as an individual, you can mainly manage Copilot from Settings → Copilot (and from your editor extensions), but there doesn’t seem to be a granular “model picker” for each feature like before. If you need precise model control for policy or reproducibility reasons, it might be worth opening a dedicated feedback ticket or checking with GitHub Support to see whether there’s an org/enterprise‑level setting or roadmap item around per‑model selection

[Sonic-12]

So… where can you actually enable or disable Copilot models as an individual?
Short answer: you canot do it globally anymore.
There is no secret settings page where you flip models like Opus 4.5 or Codex-5.1 on and off for your account.
That kind of control? Admins only. Regular users donot get a master switch.
Here is how it actually works now

1. You pick models per session, not account-wide
   When you are using Copilot in VS Code, GitHub.com, or the mobile app, you will see a model dropdown in the chat or Copilot UI.
   That dropdown is the only place you choose models.
   You are not enabling or disabling anything
   You are just selecting from whatever models GitHub has made available to your account
   If a model is not in the list (like GPT-5.3-Codex), it simply hasnot been rolled out to you yet
   No button, no toggle, no hidden menu. If it’s not there, it is not there.
2. "Auto"mode is doing more than you think
   Most people are on Auto, and Copilot quietly picks the model it thinks fits best.
   If you remember "enabling" a model in the past, what really happened is:
   You selected it once
   Copilot remembered it
   And now that model might be gone or replaced behind the scenes
   So yeah, it feels like something was disabled — but it wasnot you.
3. Real enable/disable controls are org-level only
   If you're part of a GitHub organization or enterprise, admins can:
   Allow certain models
   Block others
   Control access via policy
   Individual users donot get that dashboard. That's why models can "disappear" overnight without warning.