Hi Antigravity team, Following the recent update, I noticed that Gemini 3.1 Pro was quietly removed from the model selector for Google AI Pro subscribers, leaving only Gemini 3.8 Flash available under the Gemini lineup. While Flash 3.8 might score high on synthetic benchmarks, it is simply not production-ready for real-world engineering workflows. My actual experience using Flash 3.8 on an active, medium-sized project was disastrous: Hallucinations & Collateral Damage: It constantly hallucinated APIs and arbitrarily modified unrelated files across the codebase, introducing widespread regressions. Instead of solving problems, it broke existing functionality, leaving the project in a completely chaotic state. Infinite Loops & Quota Drain: It frequently got stuck in an endless read-think loop, failing to make decisive edits while silently burning through quota. In the end, I had to discard all of its changes via git revert and switch back to 3.1 Pro just to restore sanity. Regarding the available alternatives: while the AI Pro plan includes access to Claude 5.5 models, the rate limits and quotas are far too restrictive for full-time, daily development. More importantly, this defeats the entire purpose of the subscription: If we are forced to rely entirely on Claude just to get competent coding assistance, why shouldn’t we cancel Google AI Pro and subscribe directly to Anthropic? Gemini 3.1 Pro struck the right balance between deep architectural reasoning, context stability, reliable execution and price. Stripping it from paying Pro users turns Antigravity into a toy rather than a serious IDE companion. Please bring Gemini 3.1 Pro back to the Google AI Pro tier, or at least give us the option to route complex reasoning and refactoring tasks through Pro-tier models.

Flash 3.8 is slowwwwwwwwww! thinking so much for any task!

It would be nice if I could access Argon now that y’all pulled the plug on the most functional model for serious programming. Nah, gotta pay up 4x more. Forget it, I’ll take my money elsewhere.

I’m a gemini AI Pro user. I don’t want to pay and be forced to use just a stupid fast model. I need a valid model that works for more complex tasks. Just put 3.1 pro back or the new Argon, otherwise I will end my subscription and I’ll give my money to some competitors like Claude and GPT. No offence, but they already have way better models than yours. And what google does? It removes the only barely usable model they have? Are you serious? I hope at least Argon will be included in antigravity. Otherwise why should I pay for something it doesn’t work?

does anyone know when pro 3.1 will come again or how to fix the problem?

Exactly. Pro sub means pro model. Flash sucks. All my projects are on hold now. Muse spark free on open code makes 3 1 pro look like crap . It’s a real a free model is doing circles around 3.1. regardless why can’t we keep 3.1 ? Honestly we should be able to access all iterations of models for specific results. Sometimes I want Midjourney 4.0 images…

i need gemini pro 3.1, Why did that disappear?

For God’s sake guys, listen me up. My whole project and career depended on the 3.1 pro workflow. Please, bring it back!

Please bring gemini 3.1 pro model back!

Google Antigravity

DrQwertySilence October 13, 2026, 9:43pm 16

You can use 3.1 Pro via an API Key or Gemini AI Studio if you really need it.

Cheers.

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Please bring gemini 3.1 pro model back!

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