Gemini 3.1 Pro Is Gone From My Antigravity Model Selector. Here’s What I Can (and Can’t) Confirm

说明与用途

Gemini 3.1 Pro 已从 Google Antigravity 模型选择器中消失，只剩 Gemini 3.8 Flash。作者通过个人经验和开发者论坛确认此变更，并指出 Flash 适合有限任务，但在大规模重构时表现欠佳。

问题

The Gemini 3.1 Pro model disappeared from Google Antigravity’s model selector, leaving only Gemini 3.8 Flash as the available Gemini option.

结果

The author confirms that Gemini 3.1 Pro is no longer available in Antigravity, likely due to a rollout or planned deprecation, and notes that 3.8 Flash performs well on scoped tasks but struggles with large rewrites.

工作流

• Open Antigravity model selector on Oct 13 2026
• Observe only Gemini 3.8 Flash listed
• Check Google AI Developers Forum for confirmation
• Review Antigravity models documentation and Gemini API deprecations page
• Compare performance of 3.8 Flash vs 3.1 Pro in personal tasks
• Document findings and recommend fallback strategies

证据

On October 13, 2026, I opened the model selector in Google Antigravity and found a single Gemini option: Gemini 3.8 Flash. Gemini 3.1 Pro, the model I used to treat as the safe, top-of-the-list choice, was not there.

来源

On the same day, another user posted on Google's developer forum that 3.1 Pro had quietly disappeared for Google AI Pro subscribers after a recent update, leaving 3.8 Flash as the only Gemini choice.

来源

Antigravity's models page carries a note that some models will be removed on November 2, 2026.

来源