# I can't use argon in antigrvity i use jio's google ai pro family

**URL:** <https://discuss.ai.google.dev/t/i-cant-use-argon-in-antigrvity-i-use-jios-google-ai-pro-family/197047>\
**Category:** Google Antigravity\
**Tags:** help\
**Created:** [October 31, 2026, 12:14am UTC](https://discuss.ai.google.dev/t/i-cant-use-argon-in-antigrvity-i-use-jios-google-ai-pro-family/197047 "2026-10-31T00:14:34Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Rebbanpalli\_Naveen](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/rebbanpalli_naveen/32/120945_2.png) [@Rebbanpalli\_Naveen](https://discuss.ai.google.dev/u/Rebbanpalli_Naveen)\
**Post date:** [November 2, 2026, 10:05am UTC](https://discuss.ai.google.dev/t/i-cant-use-argon-in-antigrvity-i-use-jios-google-ai-pro-family/197047/2 "2026-11-02T10:05:22Z")

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Hi @kimjunwoo,

Welcome to the forum.

Thanks for sharing the steps you’ve already tried.

Per the [Models documentation](https://antigravity.google/docs/models), **Gemini 4 Argon** is available with **paid Google AI Pro** plans, **Google AI Ultra** plans, or **on trial with eligible premium devices** , while **Claude Sonnet 5.5 (thinking)** and **Claude Opus 5.5 (thinking)** are available on Google AI Pro for **non-trial subscriptions only** (and **Claude Sonnet 4.6** is being retired on **November 2, 2026** ).

Because model access for family members depends on the family plan manager’s subscription, please check whether your family manager’s Google AI Pro plan is currently on a trial or third-party partner offer. Per the [Upgrade FAQ](https://antigravity.google/docs/faq#how-do-i-upgrade-to-a-paid-google-ai-plan), trial and partner plans include the 5-hour Pro quota refresh on **Gemini 3.8 Flash** ([Plans](https://antigravity.google/docs/plans#baseline-quota)), while unlocking **Gemini 4 Argon** and **Claude 5.5** requires switching to a paid plan via [Google One Support](https://one.google.com/support) (or managing partner plans via the [third-party subscription guide](https://support.google.com/googleone/answer/15801606)).

If your family manager is already on a paid (non-trial) Google AI Pro plan and your expired trial is still affecting your account, please contact [Google One Support](https://one.google.com/support) to refresh your subscription benefits, or reply here with a screenshot of your Google One membership page.

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_[View the full topic](https://discuss.ai.google.dev/t/i-cant-use-argon-in-antigrvity-i-use-jios-google-ai-pro-family/197047)._