Missing Claude 5.5 models on paid Google AI Pro — Antigravity 2.24.0

Google Antigravity
1

Hello,

I have an active, paid Google AI Pro subscription, which is correctly recognized by Antigravity.

I’m running Antigravity 2.24.0 on Fedora Linux (x64).

The model selector only shows older models, including Gemini 3.8 Flash and Claude Sonnet 4.6. Claude Sonnet 5.5 Thinking and Claude Opus 5.5 Thinking are missing.

I’ve already performed a complete application reinstall, cleared the local configuration and cache, and signed in again. None of these steps resolved the issue.

The application logs show a request to v1internal:fetchAvailableModels, but no explicit HTTP error.

Could you please check whether the newer models are enabled for my account and whether my model entitlements are synchronized correctly?

Thank you.

2

Hi @KRISUUUU,

Thank you for the report.

Please check the following two account-level items:

  1. Introductory Free Trial / Promotional Period on Google AI Pro: Even when Antigravity displays Your Plan: Google AI Pro, subscriptions that are currently within an introductory free trial window (such as a first-month free trial on a new paid signup, a student offer, or a partner/device promotion) are classified as Google AI Pro (Trial) for model eligibility (Plans, Choose a model). During a trial period, fetchAvailableModels provides Gemini 3.8 Flash and Claude 4.6 (*), while Claude Sonnet 5.5 (thinking), Claude Opus 5.5 (thinking), and Gemini 4 Argon (**) unlock once the subscription is on an active billed cycle (or via the upgrade request form).
  2. Age Verification & Country Association Propagation (24–48 Hours): Check https://myaccount.google.com/age-verification to confirm age verification (18+) is completed on your Google Account, and check https://policies.google.com/terms (country association form) to ensure your account is associated with a supported country or region. If you recently subscribed or completed age verification, please note that it can take 24 to 48 hours for the updated entitlements to propagate to v1internal:fetchAvailableModels.

If your Google AI Pro subscription is already on a directly billed cycle (with no introductory trial active) and more than 48 hours have passed since subscribing and verifying your age, please reply with:

  • Whether Gemini 4 Argon is also missing or greyed out in your model selector
  • Your country/region as shown on https://policies.google.com/terms
  • Whether the same model list appears if you sign in via Antigravity CLI (v1.4.2) (agy)

We will be glad to investigate further.