Some AI character models do not function properly

When I used Gemini 3, the following message appeared and I was unable to chat

Gemini 3 Pro is no longer available. Please switch to Gemini 3.1 Pro in the latest version of Antigravity.

If chatting is unavailable for a specific character, no reply is displayed, and Stamina or free chat attempts are not consumed. However, since this message appears as a reply, it does consume them.

Additionally, another issue occurs several times a day where replies are sent with incomplete text, resulting in wasted stamina and chat attempts.

Please address this as soon as possible, starting with whatever you can manage.