AI 29 October 2026 1 MIN READ
Gemini 4 Carbon Takes #1 on the AI Intelligence Index
Gemini 4 Carbon leads the Artificial Analysis Intelligence Index v5 by one point. The bigger shift: 60% of the index now runs on private tests.
THE SHORT ANSWER
Google's Gemini 4 Carbon now ranks first on the Artificial Analysis Intelligence Index v5 with a score of 59, one point above Claude Opus 5.5. The bigger change is the method: 60% of the index now runs on private tests that models cannot study for.
On this page
What happened?
Google’s Gemini 4 Carbon took first place on the Artificial Analysis Intelligence Index with a score of 59, one point above Claude Opus 5.5.
The bigger story is the index itself: 60% of it now runs on private tests that models cannot study for.
Why does it matter?
A one-point lead says little on its own: Artificial Analysis notes that Gemini 4 Carbon tops only four of the nine evaluations in the index. What lasts is the method. With most of the score now coming from private test sets or held-out answers, it is harder for a model to look good simply because it has seen the questions before.
Leaderboards are getting harder to game. That is the real upgrade.
What should you watch next?
→ Whether the lead holds across more than four of the nine evaluations.
→ How rankings shift now that most of the index is private.
Follow the leaderboard, but read the method first.
Sources
- Gemini 4 Carbon is the new #1 on the Artificial Analysis Intelligence Index v5 · Artificial Analysis · Accessed
- Gemini 4 Carbon: our next frontier model · Google · Accessed
- Announcing Artificial Analysis Intelligence Index v5 · Artificial Analysis · Accessed
Published
Discuss on X