Google ships Gemini 4 Carbon two weeks after Argon, sweeping benchmarks with AA Index 59

Saboo_Shubham_ · x · 2026-10-29

Google released Gemini 4 Carbon just two weeks after Gemini 4 Argon, targeting long-horizon tasks.

The accompanying eval table shows broad leads: AA Index v5.0 of 59 (vs Argon 50, Claude Opus 5.5 at 58, GPT-6 Astra 57), SWE-sweep 9.6%, Terminal-Bench 4.0 65.2%, Agents' Last Exam 77.4%, GraphWalks long-context 96.2%, ExploitGym 54.8%, SEC-bench Pro 88.2%, AutomationBench 53.9% and Vending-Bench 2 bank balance of $16,484 — all best among compared models. It trails only on FrontierSWE 2 (61.2% vs GPT-6 Astra's 65.5%) and OSWorld-2.1 (81.5% vs Opus 5.5's 87.2%).

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