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Google releases Gemini 4 Carbon returns to the top tier, surpassing Opus 5.5 to take the top spot AA Intelligence Index rankings

Beating AI breaking news: Google has released Gemini 4 Carbon. Only half a month has passed since the previous flagship model, Argon, was made available to the public.

In the latest rankings from third-party evaluation organization Artificial Analysis,Intelligence Index v5.0 Carbon scored 59 points to take the top spot, surpassing Claude Opus 5.5's 58 points and GPT-6 Astra's 57 points, beating Argon by 9 points.

The improvement is particularly evident in cybersecurity. Carbon can not only discover software vulnerabilities, but also verify whether they can be exploited and generate patches to fix them. In the three corresponding tests, it achieved 88.2%、54.8% and 71.0%, ranking first in all three. However, it does not lead across the board: it still trails Opus 5.5 in Artificial Analysis's coding Agent rankings.

Google has not yet made Carbon available to the public. A small number of cybersecurity defense teams will try it first this week, after which access will gradually expand.API The promotional price announced is per million token input tokens: 2 USD, output tokens: 10 USD, the same as Argon. Prices will double after the promotion ends.

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