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Gemini 4 Carbon 将仅向 Google AI Ultra 订阅用户和 API 开放

Why we picked it

Google AI Studio 的升级弹窗泄露了 Gemini 4 Carbon 的访问门槛:要么订阅 Ultra,要么用 API Key。对开发者来说走 API 就能提前用上,普通用户则要掏 Ultra 订阅费,想尝鲜的可以先准备好 API Key。

根据 Google AI Studio 更新后的升级提示弹窗,Gemini 4 Carbon 需要用户持有 Google AI Ultra 订阅计划,或提供 Gemini API Key 才能使用。弹窗原文写着"Gemini 4 Carbon needs a Google AI Ultra plan or a Gemini API key"。

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这则提示说明 Carbon 至少会在 Ultra 订阅和 API 两个渠道率先放出,而不是一开始就在免费版 Gemini 中提供。AI Studio 的升级弹窗此前也多次提前泄露过未正式发布的模型信息,这次更新被视为 Gemini 4 Carbon 发布临近的信号。

对普通免费用户来说,新模型上线初期可能无法直接使用,需要付费订阅 Ultra 或走 API 调用。这种付费墙策略与 Google 此前对部分高端模型的分级访问方式一致,开发者则可以通过 API Key 提前接入测试。

Original · TestingCatalog

GOOGLE 🔥: Gemini 4 Carbon in Google AI Studio will require a Google AI Ultra plan or an API Key, according to an updated "upgrade" pop-up.

> "Gemini 4 Carbon needs a Google AI Ultra plan or a Gemini API key."

This means that we will see Carbon released for Ultra users and on the APIs at least!

Industry Coordinates & Source Verification

This report is categorized under AITOP's "Products" desk, focusing on US frontier AI labs and Silicon Valley technology leaders. Within our cross-regional analytical framework, it directly maps to AI developer toolchains, coding agents, and engineering workflows. Key entities and technical topics under continuous tracking include Gemini 4 Carbon, Google AI Ultra, Gemini API, ai-products.

Source attribution: curated from TestingCatalog (@testingcatalog).